The ADF Creation form allows users to create new instances in the collection without first displaying existing instances, this scenario might be very simple but the new developers find difficulty in creating empty ADF Input Form when page loads for the first time.
You can download the sample workspace from here.
[Runs with Oracle JDeveloper 18.104.22.168.0 + HR Schema]
Create Fusion web application with Business Components from Tables based on Department table. In view controller project create a jspx page then drag and drop DepartmentsView1->Form as ADF Form as shown in below image.
Go to page bindings, in Bindings section click on create control binding and select action item. In create action binding wizard select AppModuleDataControl->DepartmentsView1->Operation->createInsert.