I did not know they made a Mac version of this program. By the way it is great in Windows.
Anyways assuming it is like the Windows counterpart. Open it and go to program settings or some variant of that phrase, as it may be different in OS X. Then you can go to "confirmations" and disable most messages, go to "sounds" and disable them, then go to "updates basic" > "details". Once there change the "running mode" to "silent" and uncheck the box "show sliding box after automatic update" then click "OK" out of the windows. Then the annoyance features should be disabled.
Though I have to agree with the above posters. You do not need an anti-virus in Mac OS X.