When you're designing a form or report, you may want to provide a method for a user to easily use a command that applies only to the currect context. One way to do this is to create a custom shortcut menu and apply it to a form report, or control. The shortcut menu appears when the user right-clicks the object to which the shortcut menu is applied.
How to: Create a Shortcut Menu for a Form, Form Control, or Report
https://msdn.microsoft.com/en-us/library/ee336038%28v=office.12%29.aspx?f=255&MSPPError=-2147217396