Hi,
As of now JEEMA SMS doesn't have shared address book concept.
We can do this as an enhancement for your needs.
1. Any member can create a group and can set that group as private or public.
2. Public groups can be viewed by all members.
3. The owner of the public group only can add or delete members from that group
4. Others can only send SMS to that public group
Is this requirement is ok?
Regards