10.53.1.2. Pick a Call and add to Conference, or Create a Conference 
Allows one or more users within a conference to simultaneously initiate
- directed call pick up
- group call pick up
- pickup of a camped-on call
and add the call to conference.
Allow a user while active in a basic call connection to pickup a call (e.g., camped
on call,
directed call pickup, group call pickup) and create a conference.