When more than one applicant or admin is accessing an entry the system will display a read-only view and a "System Admin is currently editing this Application. Do you wish to take over editing and switch System Admin to a read-only view? Yes, I want to take over editing" message and link.
I think it'd be really nice to have a similar feature for when more than one admin is building or updating a submission form page, something like this:

It would be nice to see this functionality spread to other parts of the system.
This would be very useful for situations where there are multiple admins working in the same system. Sometimes admins don't realize that someone else is working in a submission form at the same time, and so can accidentally overwrite each other's changes.
At other times system admin and another admin both have a form open, and there can be confusion as to whom is editing the form or if it is okay to save a submission form.
While it is recommended to coordinate with other admins so only one person is editing at a time, this isn't always possible, and sometimes mistakes happen.
This feature would also be nice to have in the evaluation form as well.
Agreed, feature can move to official roadmap. @Eric Wind @Joshua Wray please write up. Make a list of screens that you want this enabled for and prioritize the ones you want it most critically for.