Viewing it for the first time on a Mac is weird. You find the included plugs under the Plugins menu and then the TG Plugs menu appears as a separate header. I don't know if something similar happens in Windows.
Unless... If it is 32bit only and you are running Win10 64, it might not show up at all. Other Win10 users can help, I hope.
Finale 25.2 (2014.5, 2011 for Testing), SmartScore X2 Pro, GPO 5
2010 iMac 2.93G i7, 32G RAM, OS 10.12.3, 2T SSD
Overture 5.2.2, Encore 5.0.7, DP 9.12, 7.24, Logic Pro X
Legacy G4: OS 10.4.11 & 9.2, Finale 1998 & 2002