How to generate Exchange Admin Roles?
Exchange Admin Roles shows the list of users with their subsequent roles. The users with admin roles report can be viewed based on rolegroup, user and role.
Perform the following steps to generate Exchange Admin Roles:
Select Office 365 Manager from the available vertical tabs. Then from left pane of the application, select Security Reports and then click on Exchange Admin Roles.
Once the data collection process is complete, the resultant data will be displayed as shown below:

The above image is shown by selecting the rolegroup option in the report. Likewise, the subsequent images shows the selection of other available options.