Rounding my customers will like

I have setup Rounding+ and Rounding- calculations and applied them to my cash button to round to the nearest whole USD, but rounding up 0.5 can sometimes seem a little harsh when customers are already spending a lot of money with us.

Is it possible to configure the rounindg so that…
263.79 is rounded down to 263.00
263.80 is rounded up to 264.00

I have tried fiddling with the various rate, amount and max amount values and the sort order of the calculations, but my “hit and hope” approach hasn’t yielded any results yet…