Filtering users from an LDAP user source based on group membership

The LDAP user source has a custom parameter called custom_filter. To filter by group, configure this field as follows:

{ "custom_filter": "(isMemberOf=cn=Group,dc=example,dc=com)" }

where Group,dc=example,dc=com is the group used for filtering. It is also possible to filter by any user attribute using the same custom_filter option.