How to share and sync only selected Contact groups between iphones

apple-idcontactssharingtext;

OK here goes. I apologise in in advance if questions is really stupid.
My husband and I run a charity. The charity doesn't have much money so we use our personal iPhone (with shared apple-id) to do personal stuff as well as charity work. The charity bought another iPhone for another charity worker to use. The three of us need to be able to share all the Charity contacts which I have in special contact groups. At the moment this other worker shares our apple-id. It makes me nervous though 'cause she can see all our personal photos and contacts not related to the Charity. How do I get around this? And how could it work for other charity workers? Also we need to send out a lot of large group texts (as our charity recipients don't use email). Is there an App you'd recommend? The GroupText one I use doesn't have much flexibility.

Best Answer

Don't keep the contacts you want to share in iCloud. Use, for instance, a GMail user, and keep the contents there. All three of you sync the GMail contacts list.

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