其所

its place / one's appointed place / the place for that

his / her / its / their / that / such / it (refers to sth preceding it)

actually / place / classifier for houses, small buildings, institutions etc / that which / particle introducing a relative clause or passive / CL:個|个[ge4]

each in the correct place / each is provided for

to adapt to sb's taste / to fit sb's fancy

see 忘乎所以[wang4 hu1 suo3 yi3]

used properly / used for its intended purpose / to put to good use / to serve its purpose

to know that it is so but not why it is so (idiom)

exactly what one would wish / to find one's niche

to pander to sb's whims

as one pleases (idiom)