How do i give a regular user access to Trackers modules?

We are using Sugar Version 7.6.1 and I am trying to give a regular user access to a Tracker Sessions report.

I have assigned the user to a Tracker role which has been configured as per the documentation here:http://support.sugarcrm.com/Knowledge_Base/Reports/Understanding_Tracker_Reports/index.html 

However the user still cannot access the report and keeps on getting the message "You are not able to access this report due to permissions restrictions"

Can you please help?