20 votesMichelle commented
I was going to post this same request, as "Allow monthly recurring tickets and appointments by day of the week" then found this, so you have my votes.
The ability to set recurring tickets, and recurring appointments, for monthly service by day of the week would be incredibly useful.
For example, in other automated software we use (or even Google calendar for that matter), I can set items to recur on the First Tuesday of every month, or the Third Monday of every month, and so on. If set by day of the month, that date could land on a weekend when the client and myself are unavailable.