TEC Template Based Layout Control

/**
 * Assuming Events > Settings > Templates > Events Template is set to "Default
 * Events Template" then you could add this code to your custom
 * ecp-page-template.php - placing it just above the get_header() call.
 *
 * You would of course have to change the names of the template parts to actual
 * templates within your theme. You could then have different layouts according
 * to whether a month (grid) view or an upcoming events list is being requested.
 */
if (tribe_is_month()) {
    get_template_part('custom-layout-for-grids');
    return;
}
elseif (tribe_is_upcoming()) {
    get_template_part('custom-layout-for-lists');
    return;
}