Inside the WordPress admin area, go to “Projects” and edit any project.
In the right sidebar, you’ll see a Project Details box.
You can now chose your Client from the dropdown. If you haven’t created Clients or Client Users yet, read this first.
After choosing the client, you’ll be able to choose which Client Users to assign to this project:
These Client Users can access the frontend view of the project by visiting the /projects/ URL. Find out more about the project URLs here.