regulate

To dictate policy.

To control or direct according to rule, principle, or law.

• the laws which regulate the succession of the seasons
• The herdsmen near the frontier adjudicated their own disputes, and regulated their own police.

To adjust (a mechanism) for accurate and proper functioning.

• to regulate a watch, i.e. adjust its rate of running so that it will keep approximately standard time
• to regulate the temperature of a room, the pressure of steam, the speed of a machine, etc.

To put or maintain in order.

• to regulate the disordered state of a nation or its finances
• to regulate one's eating habits