[otrs] FAQ: receiving emails through IMAPS

Quick interface question: in the postmaster mail account page (Admin->PostMaster Mail Account), how do you setup an email to receive messages through imaps? From the documentation, I believe it can be done using procmail/formail, but I was wondering if it can be done right from the otrs web interface. I guess what confuses me is that under [Mail Account Management], I can only add a POP3 account. And then, under [Note] there is a form-looking thingie that seems to do what I want but I do not see how can I make anything I enter there be committed/assigned to the user. Am I being clear as stirred mud as usual?