There is a role that will prevent ticket sellers from running and viewing the results of the My Sales by Payment Method Report. Note: By default, the ticket sellers will still see a link to the report, but they will get an error message if they try to run it. 

Have a System Role Administrator grant the Restrict My Sales by Payment Method Report role to the user: 
  1. Click Administration > Application Users
  2. Click the arrow beside the username
  3. Click Edit
  4. Mark the checkbox for Restrict My Sales by Payment Method Report Role
  5. Click Save