Hi Virginie,
for owner I have new event button in event page even if my profile type does not allow that (but it's cool for me). Because I can create events in a group when I'm admin or owner. And I can't create personnel event.
Yes owners are able to create new events in the group Events application page. I'm not sure what you meant by 'personnel event'.
for admin If Events is disable or enable in my profile type, I have not the events button in event group, for the both on story I haven't the link "events"
The permission to create events from the story panel is determined by the
Profile Type. If the
Create Event setting is enabled in the profile type, users will be able to see the
Event button in story panel.
If you want admins to be able to create events but not normal members, perhaps you can create another profile type for group admins and assign those user to that profile type so they can see the
Events button in group story panel.
for the both: I haven't polls button on application but I can create one from story board.
I'm not sure what you mean by not having polls button on application. Perhaps you can provide us a screenshot for that, other than that, polls should work similarly as events.