Unable to connect user to asset server

Hi I have never used the Asset server before and I am having difficulties. As admin, I have set up a project ‘project one’ on the server and have added several users. When I go to the project as an admin and select the project I can see the users. However, when one of hte users, with and empty project open, tries to connect and show projects, the project is not listed for him. And if he trys to type in the project name and connect he gets a message ‘User ____in not allowed to access Project One’.
Can you tell me what steps I have missed to allow access to this project?

After adding the user, be sure to click the checkbox next to their name. Each user can be turned on/off independently for each project.