This policy setting allows you to configure the "Enable additional actions in the right-click menu" button found under File ...

This policy setting allows you to configure the "Enable additional actions in the right-click menu" button found under File tab | Options | Proofing | Autocorrect Options... | Actions.

If you enable this policy setting, the checkbox will not be checked, and Additional Actions recognition will be turned off.

If you disable or do not configure this policy setting, the checkbox will be checked, and Additional Actions recognition will be turned on.