How to keep track of time if you don't have the whole team on upwork?

Question

Upwork

Hello!
If I received a project and one of the developers is working in a non-upwork and at the same time I need to track the hourly time. What is the way out of this situation?

Answer 1

Add it to the upwork as an exclusive member of the agency.

Answer 2

get him in a team on upwork or track with your hands

Answer 3

add:
curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);