In October we added the ability to make it easier to administer Power BI with the Power BI Service Administrator Role.
The documentation showed how to add this via PowerShell; today i was asked for a pictorial walk through of adding a User to the Power BI Role via Office Administrator Portal which can be done in ~5 easy steps:
Starting from within Power BI:
Step 1. Click on the Administration Gear, choose Manage Users and Go to 0365 Admin Center
Step 2. Select Edit a User from the landing page
Step 3. Select the User you want to grant the Power BI Role to.
Step 4. Edit the User Roles
Step 5. Select the Power BI Administrator Role and save the changes