Conversation so far:
What did they do in the later years?
From the late 1980s, the Four Tops focused on touring and live performances.
Where did they tour?
The group was featured in several television specials during this time, including Motown 45, and several by PBS.
Did they perform any singles on the TV specials?
CANNOTANSWER.

Question: What other events did they take part in?
Self-contained rewrite: Besides touring, live performances and television specials, what other events did the Four Tops take part in during the late 1980s?