Hi,
I know how to hide custom fields from list, table view and so on. But I see no possibility I can hide custom fields in the task itself.
Reason: we have some custom fields people are really using (they put numbers in, they use this numbers). But we have also custom fields which are only used by the API. So normaly no one needs to have a look into it, because the API is generating an automated report about these fields for management. These API used custom fields are making the task very confusing as their are too many tasks nobody needs in it.
So we need a possibility to hide custom fields (but they should be still available). Best would be a button in the fields area with make hidden fields visible.