Having full root-level access means that you can access and change every file on a selected server, in addition to all the system files, and to change system settings or set up server-side software which may be necessary for certain scripts and even offline applications in order to work efficiently. A server is accessed at the root level with a root user, who has full privileges to do all of the aforementioned things. Your root user may also generate other users. For safety reasons, you are advised to have one more account for day-to-day tasks and to use the root account only if you actually need to perform a task on the hosting server. The root-level access function gives you full control over your server from any existing location, as long as you have the user credentials.