This policy setting allows you to add non-default Accelerators. If you enable this policy, the specified Accelerators will ...

This policy setting allows you to add non-default Accelerators.  

If you enable this policy, the specified Accelerators will be added to the user's browser.  The user will be able to append other Accelerators to this list, but will not be able to remove or change the Accelerators that were added by this policy. Default and non-default Accelerators should not overlap.

If you disable or do not configure this policy, users will have Accelerators that are provided through first use of the browser.