What are channel modes?
Channel modes are modes set or removed on a channel by a channel op (someone with @nick) Channel modes can affect users in a channel and its visibility. Any channel mode can be set on using /mode #channel +mode or /mode #channel +mode (if it requires one). You can also use any combination of + modes and – modes in one line. +o This is channel operator mode (“AOP” or “chanop” for short). An op has the ability to change other channel modes – basically you can’t set channel modes in a particular channel if you’re not currently an op there. Chanops also have the ability to kick (forcibly remove) people from a channel, using /kick #channelname