aglonwl on "[Plugin: Events Manager] Multiday Event Override"

Is this using the default fullcalendar? you can modify template file at templates/templates/calendar-full.php to hide events on mondays

[event_calendar scope="3-months"]

to use templates - http://wp-events-plugin.com/documentation/using-template-files/

http://wp-events-plugin.com/documentation/event-search-attributes/