Routes
LmcAdmin enables a single route named lmcadmin, which is a literal route and standard using the url /admin. You can create child routes under lmcadmin so you enable urls like /admin/foo or /admin/bar/baz.
Add child route
To register a route as child route, the following example takes the option you name that route foo. The complete path should look like /admin/foo, so foo is a literal route with the route value /foo. Say you want this route to connect to your MyModule\Controller\MyController controller and the index action, create this config in your module.config.php:
    'router' => array(
        'routes' => array(
            'lmcadmin' => array(
                'child_routes' => array(
                    'foo' => array(
                        'type' => 'literal',
                        'options' => array(
                            'route' => '/foo',
                            'defaults' => array(
                                'controller' => 'MyModule\Controller\MyController',
                                'action'     => 'index',
                            ),
                        ),
                    ),
                ),
            ),
        ),
    ),
Change the /admin url
If you want your admin interface at /backend or something else, you must override the value of the route. In the following config, the /admin route value is replaced with /backend. Make sure this is enabled in a config where the module is registered later than LmcAdmin (otherwise, the config will not overwrite LmcAdmin's configuration):
    'router' => array(
        'routes' => array(
            'lmcadmin' => array(
                'options' => array(
                    'route'    => '/backend',
            ),
        ),
    ),
Change the controller behind /admin
By default, the /admin url links to the LmcAdmin\Controller\AdminController controller. It's an empty action and a simple view script is rendered. If you want, for example, create a dashboard on the admin index page, you probably need to point the route to another controller. In the following config, the lmcadmin route's controller is replaced with MyModule/Controller/AdminController and the action is set to dashboard. Make sure this is enabled in a config where the module is registered later than LmcAdmin (otherwise, the config will not overwrite LmcAdmin's configuration):
    'router' => array(
        'routes' => array(
            'lmcadmin' => array(
                'options' => array(
                    'defaults' => array(
                        'controller' => 'MyModule/Controller/AdminController',
                        'action'     => 'dashboard',
                    ),
                ),
            ),
        ),
    ),