I can set an activity to repeat on the first Monday (etc) of the month, but I cannot set it for the first (etc) day of the month. Very frustrating options, I go in circles frequently trying to decide how to set recurring activities to accomplish what I need to. Often I have to chose something that is less than perfect, knowing that each month when it comes up I will have to manually adjust it to be what I need, and hope I don't miss it before that happens.