I am trying to follow the directions here:
Does anyone know how and where to set the "redirect_url" on this plugin?
Do I need to install another plugin to make this one work?
Is there any off-the-shelf solution to restrict a plugin for a set of group? Or any "easy" solution to do such?
Not really, no. It is up to the plugin itself to support restriction by group. Which plugin were you referring to?
basically the question popped while thinking of installing plugin-adsense (which does not worked at all for me btw - 1.11.2)