Steps to invite/add new users and to create a new workspace
1. Create a new workspace
Go to your workspace dropdown, click on "+ New workspace" and give it a new name.
2. Activate your first app
In a new workspace no apps are activated. Click on "Start for Free" to activate e.g. Ad Optimizer.
3. Go to your profile and click on "Workspace"
4. Now press "Add user" to invite users to an app
Please note: you need to assign roles for your new users (members) in each app (in this case Ad Optimizer & Custom Project) separately → users with the role "not set" have no access to an app.
Also note: do not add new users as "Owners" (upper right corner), unless you want to give them the power to manage the whole workspace!