Adding tasks to SO's for restricted users

[Guido1982]

I see. It was an issue of the 'lock-symbol' in the profile settings. The field was set as visible but locked. Therefor the 'add task' button did not appear. Sometimes these things can be a bit vague in my opinion (which is more of a vTiger fault if you ask me), you need a bit of trial and error to get the behaviour you want.