1. Go to http://adfdev.lab.alfresco.me/ and login as firstname.lastname@example.org/admin.
2. Go to Process Services and select 'Advanced_Widget_Apps' and start a process.
3. Leave the 'Process Name' field blank and select a form from the dropdown.
4. Fill all the required fields.
'Process Name' is a required field and and 'Start Process' button should be displayed as disabled until that field is filled.
'Start Process' button is enabled even if ''Process Name' is blank.