There are two types of Office365 Business admin page. If you're both an account administrator and a user, it can get a little confusing:
- The ones with the black navigation bar on the right, with URLs like https://portal.office.com/AdminPortal/Home, and a title Admin Centre, are for the overall subscription, and tell you how many users and licenses you have. These pages are intended for administrators.
- The ones with the blue navigation bar on the left, with URLs like https://portal.office.com/Account and a title My account, are for one user, and tell you how many installs and devices that user has. These pages seem to be intended for end users.
For me, my subscription had one user and one license, and that user had up to five installs allowed.
On the "Admin Centre" pages with the black nav bar
There are two ways on the online Office365 admin pages:
- Under "Billing" in the left-hand navigation menu then "Licenses"
- Under "Billing" in the left-hand navigation menu then "Subscriptions"
Both list the number of licenses available and how many are assigned.
Also, if you click "Add user" it'll tell you if you have any available licences or if you need to buy a new one.
On the "My Account" pages with the blue nav bar
To access your user account pages from the Admin Centre, click on your username in the top right corner of the screen then "View account".
The home page has a handy info box that explains very simply how many installs this user is allowed on their one license:
That Manage Installs page is also on the nav bar, with the title Install Status.