Hi Canner69
According to my very limited knowledge, KMSpico is a powerful software to "Activate " windows and office products, I dont think it has got anything to do with dual boot etc .
The way I have set up windows 10 and Windows 7 dual boot is, I have two partition on my drive, on first blank partition I installed windows 10, then I thought I might need windows 7 aswell, so afterwards , from within Windows 10 I ran the Windows 7 installer and installed it on my second blank partition. Windows 7 configured the dual boot menu itsself,
Then I used KMSpico on both the windows to activate and activate the office products in them.
hope this helps.
If above doesnt give you the answer you were looking for kindly, repost your question a bit more precisely that what were you trying to achieve and whats exactly you are not able to achieve. thanks