I use Agenda-X 2.20 on a website running XOOPS 2.0.7.3.
Here is what happens:
1.I give permission to a restricted group of users (say "authors") to administrate the module (just to workaround the limits of the module, like I cannot give users permissions to auto-modify ther submissions);
2.automagically, all users gains admin right on other modules (at least xoopsgallery).
What is that?