Don't know how do you add WinPE 10 to GSS 3.1 Boot Disk Creator?

Just started looking at the new GSS 3.1 for what is fun and new.  It says you can use WinPE 10 but when I upgrade or fresh install GSS 3.1 to a Windows 10 or Windows 7 machine I only see PE up to 5.1.  Is there a trick to getting WinPE 10 as an option?  I have the WinPE 10 installation downloaded.  I did not install it though.

Thanks