Yes go to /settings/users
(shortcut is double tap “f”).
Then select the project you want them to see and assign an Access Group to the user.
The user will now have the permissions set on the Access Group on that project. If the permissions include read then they will see the project.
By default an access group is created with all permissions set. But if you don’t see one go to the permissions tab and create a new one. By default a new access group will have all permissions.
You can control the access at a granular level (by setting restrictions).