Charm one’s way in? (8)
I believe the answer is:
This clue is a double definition.
'charm' is the first definition.
(entrance can mean to charm or bewitch)
'one's way in' is the second definition.
(way into a building)
(Other definitions for entrance that I've seen before include "it's common, say, for some children to sit" , "Gate" , "Bowl over" , "Vestibule" , "Captivate on way in ?" .)