on $*:text:/^!add\b/iS:#:{
var %g $strip($2)
$iif(!$3 && (%g == alpha || %g == beta),goto %g)
msg # Group nonexistent. Use: !add alpha or !add beta
halt
:alpha
%alpha = $addtok(%alpha,$nick,32)
%beta = $remtok(%beta,$nick,1,32)
goto end
:beta
%beta = $addtok(%beta,$nick,32)
%alpha = $remtok(%alpha,$nick,1,32)
:end
notice $nick You are in the %g group
}