New request properties 9.2 - NOT Editable by Approver

Hi.

In the obsolete definition for request properties we were able to set the parameter to be "editable for the Approver". How do we do this with the new definition properties? 

Our use case is simple: A Person requests a resource via the Web portal. That request needs to be approved by the line manager. The line manager should then have the ability to change some of the request properties, before he\she approves it.

I have tried  "Can be overwritten" and various combinations of these request property parameters, but nothing works Disappointed

Side note: Also looking at the HTML on the source it seems to be using read-only <div> elements

I have tried this in 8.2, 9.1 and 9.2 with no success. What am i missing???

thanks in advance