Re: configuring groups for project management
FOr me, assigning category permissions to wiki pages work fine, as Gary (chibaguy) says in his post at the link showed by kwow previously.
I haven'ty tried myself other objects, but I understand this is the way to go for this goal you're pursuing (if it doesn't work, you mihgt report that as a bug or feature enhancement). PErmissions on categories or structures are new to tiki 1.9.x, and they might not be finished yet to all object types...