Usually you just hit Shift+Alt+M or click the left icon (that has A,Z) to turn the arrow grey. Unless you added more Key Maps, in which case you'd need to add them to the Activate Maps mapped key in the Control key map.

And then if you have different Key Maps for different teams, you want to black or white list them to prevent the wrong maps from being loaded on the wrong team. To do so, you would go into your Character Set in the top pane, then click on Key Maps in the bottom left pane. This will bring up the Character Set-specific white/black list editor for Key Maps.