It is not possible to call multiple termination numbers simultaneously.
Multiple termination numbers can be added to the configuration of any tracking number. When a call is received these numbers will be dialled in sequence (eg number1, then number2, then number3, etc). It is also possible to set up round-robin call distribution.
If you have a Delacon Voice over IP (VoIP) service then other solutions may be available for this requirement. Please contact firstname.lastname@example.org for more information.