Build up chain resort (9)

I believe the answer is:

rearrange

I'm a little stuck... Click here to teach me more about this clue!

'resort' is the definition.
(I've seen this before)

'build up chain' is the wordplay.
'build' becomes 'rear' (rearing is a kind of building).
'up chain' becomes 'range' (synonyms. I am not sure about the 'up' bit.).
'rear'+'range'='REARRANGE'

Can you help me to learn more?

(Other definitions for rearrange that I've seen before include "Change the position(s) of" , "Rear anger (anag.)" , "What 8 [ADJUSTER] may do" , "Alter" , "Change things" .)

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