diff --git a/lib/process-services/src/lib/process-list/components/start-process.component.html b/lib/process-services/src/lib/process-list/components/start-process.component.html
index fc7cc0c1e4..fdba0a79c0 100644
--- a/lib/process-services/src/lib/process-list/components/start-process.component.html
+++ b/lib/process-services/src/lib/process-list/components/start-process.component.html
@@ -14,7 +14,7 @@
                     <mat-option 
                         *ngFor="let application of applications"
                         [value]="application"
-                        [attr.data-automation-id]="'adf-start-process-apps-option' + application.name">
+                        [attr.data-automation-id]="'adf-start-process-apps-option-' + application.name">
                         {{ application.name }}
                     </mat-option>
                 </mat-select>
@@ -38,13 +38,18 @@
                             {{ processDef.name }}
                         </mat-option>
                     </mat-autocomplete>
-                    <button
-                        id="adf-select-process-dropdown"
-                        *ngIf="showSelectProcessDropdown"
-                        mat-icon-button
-                        (click)="displayDropdown($event)">
-                        <mat-icon>arrow_drop_down</mat-icon>
-                    </button>
+                    <ng-container *ngIf="!isProcessDefinitionsLoading ; else showProcessDefLoadingTemplate">
+                        <button
+                            id="adf-select-process-dropdown"
+                            *ngIf="showSelectProcessDropdown"
+                            mat-icon-button
+                            (click)="displayDropdown($event)">
+                            <mat-icon>arrow_drop_down</mat-icon>
+                        </button>
+                    </ng-container>
+                    <ng-template #showProcessDefLoadingTemplate>
+                        <mat-spinner id="adf-select-process-spinner" [diameter]="20"></mat-spinner>
+                    </ng-template>
                 </div>
             </mat-form-field>
         </div>
diff --git a/lib/process-services/src/lib/process-list/components/start-process.component.scss b/lib/process-services/src/lib/process-list/components/start-process.component.scss
index 49e5be1581..fa69c869cc 100644
--- a/lib/process-services/src/lib/process-list/components/start-process.component.scss
+++ b/lib/process-services/src/lib/process-list/components/start-process.component.scss
@@ -33,6 +33,11 @@
                 right: -14px;
                 top: 0;
             }
+            mat-spinner {
+                position: absolute;
+                right: -1px;
+                top: 0;
+            }
         }
         &-start-form-container {
             .mat-card {
diff --git a/lib/process-services/src/lib/process-list/components/start-process.component.spec.ts b/lib/process-services/src/lib/process-list/components/start-process.component.spec.ts
index 623a2c55b1..637a5936fc 100644
--- a/lib/process-services/src/lib/process-list/components/start-process.component.spec.ts
+++ b/lib/process-services/src/lib/process-list/components/start-process.component.spec.ts
@@ -686,5 +686,65 @@ describe('StartFormComponent', () => {
             const appsSelector = fixture.nativeElement.querySelector('[data-automation-id="adf-start-process-apps-drop-down"]');
             expect(appsSelector).toBeNull();
         });
+
+        it('Should be able to disable process name and definitions inputs if there is no application selected by default', () => {
+            component.appId = 12345;
+            const change = new SimpleChange(null, 12345, true);
+            component.ngOnChanges({ 'appId': change });
+            fixture.detectChanges();
+            expect(getDeployedApplicationsSpy).toHaveBeenCalled();
+            expect(component.applications.length).toEqual(6);
+            expect(component.selectedApplication).toBeUndefined();
+
+            const processDefinitionSelectInput = fixture.nativeElement.querySelector('#processDefinitionName');
+            const processNameInput = fixture.nativeElement.querySelector('#processName');
+
+            expect(processDefinitionSelectInput.disabled).toEqual(true);
+            expect(processNameInput.disabled).toEqual(true);
+        });
+
+        it('Should be able to enable process name and definitions inputs if the application selected by given appId', () => {
+            component.appId = 2;
+            const change = new SimpleChange(null, 2, true);
+            component.ngOnChanges({ 'appId': change });
+            fixture.detectChanges();
+            expect(getDeployedApplicationsSpy).toHaveBeenCalled();
+            expect(component.applications.length).toEqual(6);
+            expect(component.selectedApplication.id).toEqual(component.appId);
+
+            const processDefinitionSelectInput = fixture.nativeElement.querySelector('#processDefinitionName');
+            const processNameInput = fixture.nativeElement.querySelector('#processName');
+
+            expect(processDefinitionSelectInput.disabled).toEqual(false);
+            expect(processNameInput.disabled).toEqual(false);
+        });
+
+        it('Should be able to enable process name and definitions inputs when the application selected from the apps drop-down', () => {
+            component.appId = 12345;
+            const change = new SimpleChange(null, 12345, true);
+            component.ngOnChanges({ 'appId': change });
+            fixture.detectChanges();
+            expect(getDeployedApplicationsSpy).toHaveBeenCalled();
+            expect(component.applications.length).toEqual(6);
+            expect(component.selectedApplication).toBeUndefined();
+
+            const appsSelectElement = fixture.nativeElement.querySelector('[data-automation-id="adf-start-process-apps-drop-down"]');
+            const processDefinitionSelectInput = fixture.nativeElement.querySelector('#processDefinitionName');
+            const processNameInput = fixture.nativeElement.querySelector('#processName');
+
+            expect(processDefinitionSelectInput.disabled).toEqual(true);
+            expect(processNameInput.disabled).toEqual(true);
+
+            appsSelectElement.click();
+            fixture.detectChanges();
+            const sortOptions = document.querySelector('[data-automation-id="adf-start-process-apps-option-App2"]');
+            sortOptions.dispatchEvent(new Event('click'));
+            fixture.detectChanges();
+            expect(component.selectedApplication.id).toBe(2);
+            expect(component.selectedApplication.name).toBe('App2');
+
+            expect(processDefinitionSelectInput.disabled).toEqual(false);
+            expect(processNameInput.disabled).toEqual(false);
+        });
    });
 });
diff --git a/lib/process-services/src/lib/process-list/components/start-process.component.ts b/lib/process-services/src/lib/process-list/components/start-process.component.ts
index 6af624e874..795e4ab6c9 100644
--- a/lib/process-services/src/lib/process-list/components/start-process.component.ts
+++ b/lib/process-services/src/lib/process-list/components/start-process.component.ts
@@ -123,7 +123,7 @@ export class StartProcessInstanceComponent implements OnChanges, OnInit, OnDestr
     alfrescoRepositoryName: string;
     applications: AppDefinitionRepresentationModel[] = [];
     selectedApplication: AppDefinitionRepresentationModel;
-
+    isProcessDefinitionsLoading = true;
     private onDestroy$ = new Subject<boolean>();
     constructor(private activitiProcess: ProcessService,
                 private activitiContentService: ActivitiContentService,
@@ -217,6 +217,7 @@ export class StartProcessInstanceComponent implements OnChanges, OnInit, OnDestr
     }
 
     loadProcessDefinitions(appId: any): void {
+        this.isProcessDefinitionsLoading = true;
         this.resetSelectedProcessDefinition();
         this.resetErrorMessage();
 
@@ -245,9 +246,11 @@ export class StartProcessInstanceComponent implements OnChanges, OnInit, OnDestr
                 this.selectedProcessDef = filteredProcessDefinitions.currentProcessDef;
                 this.processDefinitionInput.setValue(this.selectedProcessDef ? this.selectedProcessDef.name : '');
                 this.processDefinitionSelection.emit(this.selectedProcessDef);
+                this.isProcessDefinitionsLoading = false;
             },
             () => {
                 this.errorMessageId = 'ADF_PROCESS_LIST.START_PROCESS.ERROR.LOAD_PROCESS_DEFS';
+                this.isProcessDefinitionsLoading = false;
             });
     }
 
@@ -260,6 +263,7 @@ export class StartProcessInstanceComponent implements OnChanges, OnInit, OnDestr
             if (filteredProcessDef) {
                 this.selectedProcessDef = filteredProcessDef;
                 this.processDefinitionInput.setValue(this.selectedProcessDef ? this.selectedProcessDef.name : '');
+                this.processDefinitionSelection.emit(this.selectedProcessDef);
             }
         }
     }
@@ -288,6 +292,7 @@ export class StartProcessInstanceComponent implements OnChanges, OnInit, OnDestr
                     this.applications = filteredApps.applications;
                     this.selectedApplication = filteredApps.currentApplication;
                     this.applicationSelection.emit(this.selectedApplication);
+                    this.toggleProcessNameAndDefinitionsDropdown();
                     this.loadProcessDefinitions(this.selectedApplication ? this.selectedApplication.id : null);
                 },
                 err => {
@@ -300,9 +305,14 @@ export class StartProcessInstanceComponent implements OnChanges, OnInit, OnDestr
     onAppSelectionChange(selectedApplication: any) {
         this.selectedApplication = selectedApplication.value;
         this.applicationSelection.emit(this.selectedApplication);
+        this.toggleProcessNameAndDefinitionsDropdown();
         this.loadProcessDefinitions(this.selectedApplication.id);
     }
 
+    private isAppSelected(): boolean {
+        return !!(this.selectedApplication && this.selectedApplication.id);
+    }
+
     private removeDefaultApps(apps: AppDefinitionRepresentationModel []): AppDefinitionRepresentationModel[] {
         return apps.filter((app) => app.id);
 
@@ -425,6 +435,20 @@ export class StartProcessInstanceComponent implements OnChanges, OnInit, OnDestr
         return this.processNameInput;
     }
 
+    get processDefinitionController(): AbstractControl {
+        return this.processDefinitionInput;
+    }
+
+    private toggleProcessNameAndDefinitionsDropdown() {
+        if (!this.isAppSelected()) {
+            this.processDefinitionController.disable();
+            this.nameController.disable();
+        } else {
+            this.processDefinitionController.enable();
+            this.nameController.enable();
+        }
+    }
+
     processDefinitionSelectionChanged(processDefinition) {
         this.selectedProcessDef = processDefinition;
         this.processDefinitionSelection.emit(this.selectedProcessDef);