This command will join you to a line if auto isn't enabled on the server. At the end is an optional reason that you can place in the join that will let the channel operators know the reason for being in the line.
This command also will allow channel operators to add someone to a channel line.
/msg SupportBot line #lobby join Java Support please.
/msg SupportBot line #lobby join Mark
This command can be used to manually add yourself to the channel line. This enables you to add UI elemnts to have users 'take-a-ticket'.