Time Entry Macro

Time Entry Macro

Is there a macro (or a way to set one up) that we can use to more easily put in time for tickets rather than having to go to a different tab, then switch back to the "Conversation" tab in order to close the ticket? My manager used to use a program at a previous company that they would simply press: "+Xm" to put in time for "Minutes" or "+Xh" for hours. (ex: +5m for 5 minutes, or +2h for 2 hours).