There are plenty of plugins that lets you create custom roles and manage existing users conveniently. With View Admin As, you are going to have an easier time viewing the WordPress dashboard as different user roles. The plugin lets you switch to a new role view and between accounts.
The plugin lets you see your site as an unregistered visitor. You can change your own capabilities to test things out. Webmasters also have the option to set default screen settings for roles and apply them to all users under them. No need to log out and in to make changes happen.
The plugin doesn’t mess with your data and lets you change your own capabilities without irrevocable changes. You can try View Admin As for free.