Changes membership manager so that they can only view the members list and add new members via PMPro Add Member.

my_pmprommr_change_caps.php

<?php
// Copy from below here...

/*
 * Changes membership manager so that they can only view
 * the members list and add new members via PMPro Add Member.
 *
 * Can customize using your own caps from here:
 * https://github.com/strangerstudios/pmpro-membership-manager-role/blob/35725b5cc9d7fd403255e4143a5bd5f1564b022d/pmpro-membership-manager-role.php#L16-L42
 */
function my_pmprommr_change_caps( $caps ) {
	$new_caps = array(
		'read' => true,
		'pmpro_memberslist' => true,
		'edit_users' => true,
	);
	return $new_caps;
}
add_filter( 'pmpro_membership_manager_caps', 'my_pmprommr_change_caps' );