Man follows guide dropping one — that’s how it’s schemed (7)
I believe the answer is:
plotted
'it's schemed' is the definition.
(I've seen this before)
'man follows guide dropping one that's' is the wordplay.
I cannot really see how this works, but
'man' could be 'ted' (Ted is a man's name) and 'ted' is found within the answer.
The remaining letters 'plot' is a valid word which might be clued in a way I don't see.
This explanation may well be incorrect...
'how' is the link.
Can you help me to learn more?
(Other definitions for plotted that I've seen before include "Plant of damp areas" , "Schemed" , "was a conspirator" .)