If you are an administrator and you want to invite guests to your tenant, you can add users without a role. If a user doesn't have a role, they are a guest user. A guest user can only see the processes available in the process publication portal.
You can see which users are active by going to Admin > Users. Here you can also see which users have roles assigned to them.
If you are a guest user (a user without a role) logging in, the following screen will pop-up.
You can contact your administrator if you want to be granted a role to be able to work in the BlueDolphin tenant. If you want to go to the process publication portal, click the button Go to official processes.