You may belong to multiple subscriptions (companies).

In that case you can select the one you want to work for by pulling down the subscriptions menu in the upper right corner:



Then, every following tasks you will perform will be done in the context of the selected subscription. 

e.g. DGD Library, User Management, etc.


To join a new subscription, one of the administrators needs to send you an invite by creating you as a new user in the subscription they manage.