Manual IT8 calibration with SE Plus 8.8 ?

[Ueli]

I have purchased an SE Plus licence and an IT8 target. When I ordered, I thought having read somewhere that SE Plus can do an IT8 calibration with a manual process. Now that I have the licence and the target, I have tried finding again information on a manual process, but without success.
Am I wrong with my assumption about the existence of a manual process?
If so, I my target is probably useless.
If not: Where can I find a description of the manual calibration process?

[LSI_Ketelhohn]

Dear user,

The IT8 calibration is only included in SilverFast Ai Studio.
With our own targets the process is always automatic. A manual calibration process does not exist.

The only IT8 calibration we do offer as an option for SilverFast SE Plus is the Printer calibration. This option is available for flatbed scanners only.

Kind regards,
Arne