I would recruit a bunch of volunteers who, at a specified time, would vacate their rooms.

我想招募一批志愿者，他们在某一特定时间腾出自己的房间。

youdao

He would like an assurance that other forces will not move into the territory that his forces vacate.

他想要其他部队不会进入他的部队撤出的那个领地的一个保证。

《柯林斯英汉双解大词典》

Craig's announcement on Saturday that he would vacate his seat, effective Sept. 30, was inevitable.

NPR: Warner's Move Adds to Growing GOP Senate Woes

The court ruled Friday in agreement and said it would vacate the board's order against Noel Canning.

WSJ: Court Rules Obama Recess Appointments Unconstitutional

On Twitter last week, the group said it would start to vacate on 11 February, stating it would "begin looking forward to the next stage of our protest".

BBC: Occupy Norwich protest group issued with court notice