![background image](http://html1.mh-extra.com/html/control-4/c4-vdb-e/c4-vdb-e_setup-manual_2658265006.webp)
7. Under Call Settings, select a call group for the VDB to ring (default is All). To test an intercom
call to a call group, select the group under TEST CALL GROUP and click
TEST CALL.
8. Select the Intercom proxy sub-driver of the VDB. Configure Intercom properties such as
Custom Buttons to show up in an Intercom call.