How do I check if a workout is included as part of a program?

Some of the recent workouts in FB state in the description " This workout serves as Day X of Challenge Y but can also be completed as a standalone". This is nice to know and gives me insight into what programs/challenges to try next.

However, if I do a standalone workout and say, I like it and wish to try a program/challenge that includes it, is there a way I can find out?

Edited