To create or edit an existing Display Event Mapping File, from Orion's menu bar click on Athena -> Spectator Displays -> Edit Display Event Mapping File
Display Event Mapping files may be edit manually through your favorite text editor (e.g. vim). See Event Assignment Files for more information.
To assign which Display Event Mapping File a Display should use, in the Range Control tab double click the row representing the Display Unit. The EST Display Form will open. The Display Event Mapping Files listed, are those found in the My Matches/DATABASE/Display/Event Assignments directory.