1. From Setup, enter Profiles in the Quick Find box, then select Profiles.
2. Click the name of the profile you want to modify.
3. Go to the Visualforce Page Access page or related list and click Edit.
4. Select the Visualforce pages that you want to enable from the Available Visualforce Pages list and click Add. You can also select the Visualforce pages that you want disabled from the Enabled Visualforce Pages list and click Remove.
5. Click Save.