NICK PROPERTY: AUTHCHAN
Usage: PROP <nick> AUTHCHAN [<ALLOW|AUTHORIZE|DECLINE>]
With the AUTHCHAN property you can control what happens when someone tries to add you to a channel access list. ALLOW and DECLINE immediately allow or decline the request respectively, while AUTHORIZE sends you an authorization request which you can accept or decline.
/uprop authchan allow
/uprop authchan authorize
See also: AUTH