NOTE: You will need to add a Delegate before continuing with this process. If you have not already done so, please follow the article below:
Microsoft Teams: Adding a Delegate from Settings (Desk Phone)
STEP 1
Select the icon in the upper left hand corner of your Phone's home screen containing your initials.
STEP 2
Select Settings, then Calling.
STEP 3
Enable Call Forwarding.
STEP 4
Tap the Forward to field and then select My delegates.