to arrange, furnish, or set up (a room, venue, decoration); to prepare and install furnishings or fittings.
客人を迎えるために和室をしつらえた。
I arranged the tatami room to receive guests.
伝統的な茶室を設えるには時間と技術が必要だ。
It takes time and skill to set up a traditional tea room.
展示会のために会場をしつらえる担当になった。
I was put in charge of setting up the venue for the exhibition.