Everyone here has an Android phone with DAVdroid, syncing their contacts into our nextcloud instance. I would like to be able to share common address book entries with the others, while keeping some for myself.
My colleagues are of no interest to my family, so they should be on my address book only. Contact entries for relatives and friends should be available to the whole family.
What’s the best way to setup this kind of contact sharing for multiple people?
How can move contacts from my personal group into the common shared group and back?