Dialpad lets you add a caller to an active call, creating a three-way call in seconds.
Let's take a look at how to add a caller in Dialpad's desktop app.
Add a Caller
From an active call in the Dialpad app, select Add and enter a contact's name or entire number.
Choose who to add, then select Confirm to dial the additional caller. They'll be added to the call upon answering and, if they don't answer, select Hang Up to disconnect.