Set out what platelayers do (4,6)
I believe the answer is:
make tracks
'set out what platelayers' is the definition.
I know nothing about this answer so I can't tell whether this works.
'do' is the wordplay.
I cannot quite understand how this works, but
'do' could be 'make' (making is a kind of doing) and 'make' is found in the answer.
The remaining letters 'tracks' is a valid word which might be clued in a way I don't see.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for make tracks that I've seen before include "create a record" , "add to one's album" , "Go quickly" , "Platelayers will" , "leave quickly" .)