1. Sign in with Supervisor rights
  2. Navigate to Users & Security > Roles.  Click New Role
  3. Enter a Role name; for this example you will use Southeast Region. Leave other settings as they are. Click Members tab to find and add this role to your users. (This step can be skipped and users added later if we want)
  4. Click Save. Repeat for as many roles as needed.
  5. Navigate to Users & Security > Task Groups. Click New task group.
  6. In the window that pops up, select Site Task Group and click Okay.
  7. Create a Task Group Name. For our example, we will call this Regional Access
  8. Check any rights that we want to grant our users. (Full rights for a page/part/etc will allow a user to create, copy, edit, delete, etc.)
  9. Click Save
  10. Click the green New Security Assignment button next to Save
  11. Click the radio button for Site Tasks
  12. Choose one of the roles created in steps 2 and 3. 
  13. Choose our task group created in step 7
  14. Click Save and repeat for all regions
Now you will need to apply specific roles to the pages that we want to grant access to
  1. Navigate to the page that you want only a "Southeast" user to access
  2. Edit this page and click the green Page properties button
  3. Click on Targeting & Security tab
  4. Click Add Users and roles
  5. Uncheck any boxes associates with the User/Role Name "Everyone"
  6. Click Add users and roles and add the Sourtheast Role
  7. Click the Edit checkbox. This will also give them View rights by default. This will allow anyone with this role to View and Edit the page. 
  8. Click Okay
  9. Click Save
  10. Repeat for all pages as necessary

For additional information, please refer to: