There are many ways to do this in Max, depending upon exactly what you're trying to accomplish. One method is shown in the "Scaler" example installed with Max.
Pitch quantize could utilize a select, which then only bangs certain notes. For tempo quantize, you can use a set $1 message to the anticipated note (instead of sending it right away), then use a global metro to bang the note out...in whatever subdivision you want. That way the notes always sound (or go into a seq or whatever) in a quantized manner.