AltiGen MAXCS 7.0 Update 1 MaxCommunicator - Manual (Page 37)

MaxCommunicator Manual 31
Handling Calls
While MaxCommunicator dials the new number, the other
party or parties go into Hold Pending state, and you see a
confirmation dialog box.
After the dialed party answers, click Yes in the dialog box. If
the dialed party does not answer, click the No button.
•
Selecting from Menu—When a call is on hold, you can add it
to the conference by right-clicking the call and selecting Join
to Conference: