"Your EAF is able to be manually controlled and there are two ways
to achieve this. One is via the optional hand controller and secondly
via the astronomy software package in use."
So I gather this means that you can focus manually
through the EAF. i.e. there's no clutch release where you can turn the focuser knob.
Have a look through the manual here:
https://astronomy-imaging-camera.com..._Manual_EN.pdf