It’s been an interest of a good number of people for a while as you can see in this early post. The Onefinity controller is not able to do that, and as far as I’ve seen anyway, no one has come up with a work around. Onefinity at one point mentioned they were looking in to this, but I haven’t seen anything since.
You may be able to change the spindle speed though. If you have a hand router, you can pause controller, change speed on router, and unpause. If you have a spindle/VFD you are able to do the same if your VFD allows a “temporary modbus control override”.
Certainly would be a nice addition to the Onefinity controller to have feeds/speeds override on the fly some day.