Probe rotation during manual alignment

If you can make an alignment that will have the CMM able to measure for itself, don't rotate the probe during the manual alignment so you lessen the risk of someone running, hitting enter without reading and spinning the head into the part.

I never (unless I'm only checking heavy roughing) trust the manual alignment for anything other than showing the CMM where the part is.

If I use A, B and C in my manual alignment, I'm still going to measure them ALL in DCC.
The DCC features are used to align the part.
The DCC features are used to generate output for part conformance.
The manual features are a waste of time between putting the part down and the machine measuring.
Make them as fast and easy as possible.

They don't have to be the datums.
Plane, line, line.
Read Point if you have tooling to hold the part with.
Plane, plane, plane (all four hits).
Just a circle and use variables to pull the Z out of it so you can take a point to find the part surface prior to running full speed.

Keep the manual alignment as fast and easy as possible, and measure everything DCC with good hit distribution for accurate results.
In my opinion, anyway.

But yes, you can rotate the head in a manual alignment as everyone else stated.
If I trusted the people I expect to run it, I'd do it with instructions.
If I don't trust the people (and I sometimes have no clue who will run, so I don't) then I would do as Kai suggests.

super long comment to say yes you can rotate the head lmao

super long comment to say yes you can rotate the head lmao