You can create a Return button if you'd like to, it's pretty easy.
In the POS Configurator open the Touchscreen Designer under the Devices tab.
[ol 1]
[li]Select the screen where you're going to put the Return button. Most often it's on the Function or Payments screen.[/li]
[li]Move buttons around if needed to make room for the Return button, then click the blue plus sign to add a new button. It will appear in the top left corner, so just drag it to where you want it.[/li]
[li]Set these fields:[/li]
[ul]
[li]Legend - Return Item[/li]
[li]Category - Function: Transaction[/li]
[li]Function - Return[/li]
[/ul]
[li]Set the font and color to whatever you want and you're done.[/li]
[/ol]
As far as somebody resending a closed check to the kitchen, I don't know of any way in Micros to do that without entering the menu item again. Is it possible this person reopened the check, sent the menu item to the kitchen and then voided it? Personally I really don't like the Reopen Closed Check function, it doesn't work well IMO, and I've spent more time figuring out mistakes on reopened checks than any other single issue.
You should take a look at your employee classes, find out who has the ability to reopen checks, and cut it down to just managers at the most. You can see this in the Configurator - Employees tab - Employee Classes button - Guest Check Control tab.