<?php

function my_parse_query(){
global $wp_query;
if( is_admin() && !empty( $wp_query ) && !current_user_can('edit_others_events') ) {
$user = wp_get_current_user();
$wp_query->query_vars['author__in'] = array($user->ID);
}
}

add_filter('parse_query', 'my_parse_query', 100 );