Insufficient Privileges Error in the AMS When Moving a Candidate to a Different Stage

If a user sees this Insufficient Privileges error in the AMS when attempting to move a Candidate to another Stage or Substage it is often due to missing Visualforce Page Access on the User's profile type.

Enable the Visualforce Page Access using the instructions below then confirm the User is able to move Candidates between Stages. These steps need to be completed for each affected Profile type.

1. Navigate to the affected Profile in Setup > Users > Profiles or by clicking the link from the affected User's record in Setup > Users > Users.
2. Scroll to the Enabled Visualforce Page Access section and click the Edit button.
3. Move the ts2extams.AMSProxyPage page from the Available Visualforce Pages to the Enabled Visualforce Pages using the Add button.
   
4. Click Save.