Yealink T41P Skype User Manual page 127

When the first party answers the call, press the Hold soft key to place the call on hold.
2.
Press the NewCall soft key to place a new call.
3.
Enter the number of the third party, and then press the Call soft key.
4.
You can also enter the first few characters of the contact name or the contact number.
Then select the desired contact from the result list, the call will be placed directly.
When the third party answers, press the Conf soft key.
5.
Press
6.
Press the Merge soft key.
7.
The active call and the held call are joined into a conference.
Press the Add soft key, and dial other numbers to invite more parties.
8.
Joining Two Calls into a Conference from the Skype for Business Client
To initiate a Skype for Business conference call from the Skype for Business Client:
Place a call to the first party.
1.
Click
2.
Enter the first few characters of the contact name or the contact number in the search box.
3.
to select the contact that is held.
-> to place the call on hold.
Basic Call Feature
117