I'm not sure how much I would trust this, since it doesn't have any votes for/against, but according to Windows Compatibility Center it should work - Link
If you perhaps research on Windows 8.1 compatibility with Approach, you might find some results, just on the basis it's been out longer. If it works in 8.1 I'd strongly suspect it would work in 10 (but that's just my opinion).
The last experience I had with Lotus software was trying to get Lotus Organizer (which the user swore by) to work on a newer 64bit system. IIRC it was giving DLL missing errors on starting the program, and the solution was to copy said DLL file into the program directory. I could see some elements of Lotus Smartsuite giving issues on new OS's like Windows 10 (for example that ancient looking desktop toolbar it installs) but that is not a critical.
Ultimately a solution for running any older software that proves problematic (in general) could include running an older version of Windows as a virtual machine, or even DOSBox is you want to run really old software.