We have a tab set up with fields we'd like to set to read-only once an issue passes a certain point in a workflow (tab only, not the entire issue). I've looked at several plugins, but they either hide the tab/fields entirely or secure the fields down post-creation.
Does anyone have advice on plugins or other ways to accomplish this? We use the Behaviours plugin, but again, I need something that will be set in a post-function, preferably.