ReijiKitozawa

Are people allowed to be in more than one panel? I did not see anything about it on the panels page but I would just like to make sure. I'm not asking for any monstrous number. I would just like to participate in two panels. Also, if I am allowed to ask, why has the panels policy changed from a few weeks ago when it said that a panel could have a maximum of four panelists to now only allowing two panelists?