We've redesigned the create forms to be based on a single column of fields with the save button at the bottom. The form uses the same fields widget from the records page and allows you to specify:
Sections with headings and descriptions
Field labels to override field names
Field descriptions to provide guidance to your users
Create forms also support conditional visibility which updates whether widgets are displayed based on the values of other fields on the record. This happens live as your users type which allows you to ask conditional follow on questions in your create form.
You can also set a required field in your create form so that the form will only save if the user fills this in correctly.
Got to edit pencil in the field:
Tick the 'Required checkbox: