First you need to make sure your endpoints have the multisite option installed
SystemUnit Software OptionKeys MultiSite: "true"
You can make a reular P2P call and dial a third endpoint and the call will automatically be a multisite call without having the presence of an MCU. The endpoint being the master of the call needs to have the multisite option. The option keys can be checked on the webgui of the units.
Just in case I misunderstood your questions was there any particular place you want to configure the multisite call? Do you want to book it from TMS? Or did this answer your question?
If you do not have "Multisite option" installed, then you cannot make calls to multiple sites at the same time using the on-board MCU - but you will still be able to make these calls through Multiway, as you have discovered.
The multisite option key can be purchased separately for each end-point, and once entered, activates the onboard MCU.
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The short answer is that you don't.... That isn't entirely true while at
the same time it kind of is, but for the most part you don't configure
the softkeys. You enable or disable them via TCL. Here is the long
answer. Be sure to read the whole thing or e...
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