Description of the limitation and why it is relevant to address
I think this is relevant for the VIKTOR platform because it makes fields read only depending on other parameters.
This is the same as this feature request Option to make parameter not editable/read-only - 
Feature Requests - VIKTOR Community, but it is more than a year old…
Submitter proposed design
Same parameter design as the visible parameter, and same look as when another user has an entity open and you cannot edit the fields.
Current workarounds
I currently make two fields, an input field and an outputfield with the same value and then use the visible parameter