Users can see(and delete !) actions from other group users

[BertoXino]

Hello there,

I am trying to setup zabbix for a "multi users" usage.
I have 3 usergroups, with 3 users each. (1 admin and 2 users per group).
As superadmin, I created a hostgroup for each usergroup (you can only create hostgroups as superadmin).

so each groupadmin is able to create hosts, triggers, items, and actions.

MY problem is that a admin from a group can see (and deleted!) actions from other groups. How is this possible ? Can we totally isolate user's group (and all associated stuff) from others ?

Thanks

BerT.