Managing the time continuium is the “Time Travel Authority”. This is thier only task. Without them, time would cease to exist. The primary roll of the authority is sending Time Rangers, back or forward in time, to monitor, maintain, and if required prevent any paradoxes from occurring.
Armed with pulse rifles and usually in a team of 2 or more, the Time Rangers are trained to bend time, and people to thier will. If nesseccary, they must apprehend anyone who is not compliant.