Nano PRO Lic + TS480 + Antenna Button

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Hello,

I purchased the Pro version of RRC Nano K today.
So far everything works quite well. Nice App!   

Just the button "Ant." and the handling of the dialog box "Auxilary Controls" is not clear to me. How are the select buttons meant ?
That you can switch between the two antennas is clear to me, but I find the operation of the antenna tuner and the behavior of the select buttons not very intuitive.   
Unfortunately I did not find a description of it anywhere.

Regards,
Dirk

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Can't anyone say anything about it?
Is it possible to trigger the antenna tuner at all?

I have the impression that no matter what you do in this dialog, the antenna tuner cannot be made to tune the antenna to the current QRG.

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I wish you all a Happy New Year.

But - sorry - I do not find it very pleasing when you have to pay about 45 Euro for the App and then do not get any support.