Specific permission to add new contacs



I want a group of users to be able to add new contacts under a specific OU
but I can't find out how ? I don't want them to be able to create new users
and groups.
I'v tried to give them All permissions on object contact in that OU but they
are still not able to create new ones.

Can you help me out ?

Sincerely

\\Jonas B


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