Understanding Lora-channel-Manager

Hi brocaar just need a better understanding to when does the use of lora-channel-manager comes into play??. If i am not wrong we already have a default channel(automatic) In what scenario do we need this component??

Basically when you want to manage the channels your gateway is listening on from a centralized place (LoRa Server), instead of ssh-ing into every gateway to update its channel-plan.