Disable Personalization

To implement the solution, please execute the following steps:

1. Go into the responsibility: System Administrator.
1.1 System : Profile
1.2 Set the Profile "Disable Self-Service Personal" to YES.
1.3 Goto Sales User responsibility.
1.4 Leads Update Page: Personalize Page Link.
1.5 Manage Levels Button.
1.6 Delete (Or Deactivate) this personalization which was affecting the page.