One renting a new resident in shelter (6)
I believe the answer is:
tenant
'one renting' is the definition.
(person renting a property)
'a new resident in shelter' is the wordplay.
'a new resident' becomes 'na' (I can't explain this - if you can you should believe this answer much more).
'in' indicates putting letters inside.
'shelter' becomes 'tent' (tent is a kind of shelter).
'na' going into 'tent' is 'TENANT'.
Can you help me to learn more?
(Other definitions for tenant that I've seen before include "his flat?" , "Someone who pays rent" , "Rent payer" , "Rent-payer" , "individual bound by lease" .)