Hey there. I got a CardDav Sserver running via Nextcloud. I wanted to create a shared addressbook (read only), where no other persons can edit numbers etc.
I created two accounts. Number 1 shares an addressbook with number 2. On the iOS devices I added Account 2 and all the contacs show up and you can not change any of them. The problem now ist, that people can still add number to existing accounts oder editing textfields. All these changes will then show up on Number 2s Nextcloud contacs interface.
Is there any way to prevent that as well? Just a plain addressbook, where nothing can be edited and if someone wants to add personal numbers they still can do and save them in their icloud or what ever account.
Best regards and hope to find someone to help me.