This is especially useful if you are in a public channel so you can see who is who immediatly. Beside the group-system there are several levels of permissions . How to become a channel owner see above . As a group-administrator you can change all of your groups configuration like groupcolors, you can find out who belongs to your group and you can even kick out users which are in your group. You have to know the admin-password of the group you want to be administrator of.
Every group can have a different admin-password.
The last level of permissions is the chat-administrator . For a detailed list of all possibilities see the commands available for each level. This section describes all things which are possible for a client, starting from its connection until it leaves. There can be up to 100 clients the same time by default. Introduced with version 2.02 there can also be other client-types.