Assuming that the schedule
field is part of the Event
post type, you can grab the schedule this way:
<?php
$event_id = get_field( 'the_users_event_field_name' );
if ( is_object( $event_id ) ) {
$event_id = $event_id->ID;
}
get_field( 'the_schedule_field_name' , $event_id );