Contact group filter
Proceed as follows:
Using the Configuration Manager (User data > Address Books > Contact group authorisations)


Requirements:
At least one configured contact group
CONTACT GROUP FILTER
Select a contact group or all contact groups for editing the authorisations for individual subscribers.
Filter:
Enter filter criteria for the search of contacts into the entry fields Phone number and Name.
All:
The subscriber receives read and write access for all contact groups.
Read access:
The subscriber receives read access for this contact group.
Write access:
The subscriber receives write access for this contact group.