How to create a specific role to manage users

The following capabilities are needed to fully manage users:

create_users
edit_users
promote_users
delete_users
remove_users
list_users

Remove role, you’ve created with Members plugin. Add the following code to functions.php of your active theme:

add_role(
    'users_manager',
    __( 'Users Manager' ),
    array(
        'read'              => true,
        'list_users'        => true,
        'promote_users'     => true,
        'remove_users'      => true,
        'edit_users'        => true,
        'create_users'      => true,
        'delete_users'      => true,
    )
);

Once ‘users_manager’ role is created, you can remove above code from functions.php.