Q6. If a workflow has been rejected, the user should not be allowed to change the request data.

This is able to be fulfilled by the steps below:

1. Create a new field by using "choice box" and insert it into HTML form in creator node.

1. After that, put the field properties as "Edit" and hide it.

1. Make the "submitted" field as Yes by setting up the "Operation after node". Remember to tick the "execute when drawback".

1. Last but not least, you may set up "display property linkage", and make the date selection field become read-only.

This method is able to let the system know the workflow has been submitted before from the "submitted" field and make the date selection field become "read-only." Therefore, the user is not able to edit or change the date after rejection.