Tool setter installation question

Good day.
Question on toolsetter installation.
On the instruction it indicates to install the red adaptor. ( B )
But is this for when you have a spindle only in order to reach the toolsetter?

If you have dual spindle and it is installed on the left side it will reach the tool setter…is there something I am missing here?

Tnx.

This would be a good question for support. Please open a ticket with them and they can advise you best in this scenario.