Every phone is actually being commanded by the nearest cell site, and the overhead data is constantly being transmitted, and this data telle the phone how much transmitter power to utilizeas it polls the handset(RSSI).
For example, leaders may define that salary increases within a certain percentage boundary per year can be granted by managers without needing any outside approval, or define that X dollars of a budget are allocated for special projects each year for managers to utilizeas they deem appropriate.