What hint to use to supervise another tenant's extension?

Greetings ,

Is there a documentation which explain better how to use the hints (VitalPBX hidden article, or Asterisk)? I am trying to understand how to better use the BLF hints, for example in my lab I have a test extension which wants to monitor a test Tenant extension. The asterisk hint shows this:

102@T4_extension-hin: pjsip/T4_102&Custom: State:Unavailable Presence:not_set Watchers 0

So What would be the hint to monitor?
102? (But then what happens if another tenant has 102)
102@T4?
T4_102?

Thank you all

I didn’t review the dialplan recently, but I think you’ll have to create a custom hint to monitor that.