Verb corresponding to schedule, but for a place (instead of time)

A verb equivalent for schedule relating to place is site:

We have sited the morning reception in the Mangosteen Room.

Site the portable flux capacitors for maximum exposure to the antimatter stream.

site, tr.v. 1 : to provide with a site; 2 : to put in position so as to be able to perform a specific mission [Merriam-Webster]

The verb situate, "To place on or into a physical location", may be used. Alternatives include locate, fix a place, and set a venue. (Venue is a noun meaning "A place, especially the one where a given event is to happen".)

Edit As I note in a comment, one is more likely to hear sentences like the following

The meeting is in the conference room.
The meeting will be held in the conference room.

rather than "The meeting is situated in the conference room". If the meeting venue is under discussion, quite plausibly one might hear "We haven't decided where to situate the meeting", but again "We haven't decided where to hold the meeting" is more likely.

In facilities planning vs. meeting planning, cases using situate are a little more likely: "We haven't scheduled this plant because we haven't situated it yet."

As noted in comments, "schedule" works for locations too. But if you're looking for a location-specific word, try book (def. 27):

to reserve (a place, passage, etc) or engage the services of (a performer, driver, etc) in advance: to book a flight; to book a band