Create an inbound agent
Set Agent Direction to Inbound on the Assistant tab. Choose User First on the Prompt tab if the caller should speak first.
Assign the number
Under Telephony → Phone numbers, assign the number to the agent.
Test it
Call the number from your phone. The call appears in Call Logs with the inbound arrow.
An inbound agent can also be allowed to place outbound calls from its Assistant tab, for example to return missed calls.