I am trying to use the new forms designer to create one master form that will be used multiple times for an approval process where each approval needs to see what was submitted with the initial application. This is easily done in the new forms designer by hiding sections based on the current process step.

The issue I'm running into is there is a signature field on the initial application, so then when it is reviewed by internal staff, the form wants them to re-sign the form at each step. If the signature field is manually switched to read-only in the middle of the process, then it shows the existing signature, which is what I want.  How do I mark a signature field as read-only after the initial form is submitted using the new forms designer?

How the field looks if not marked as read-only during review:

How the field looks if I manually mark it as read-only:

In the classic forms designer I would create two separate forms - the initial form, and then the engineering review form and I'd have to duplicate all of the fields on the Engineering review form so they could see and edit it.  Using this method I could mark the signature field as read-only on the Engineering Review form and everything worked fine.  But in the new forms designer I'm not seeing a way to do that.