The phrase "assemble it at" is correct and usable in written English.
You can use it when giving instructions on where to put something together or construct an item.
Example: "Please assemble it at the designated location marked on the map."
Alternatives: "put it together at" or "construct it at".
The kit, which sells for $195, ships flat-packed, requiring that you assemble it at home with mini Phillips-head and flathead screwdrivers.
The suit will go through about seven or eight hands, Mr. Powell said, including the workers who assemble it at nearby tailoring houses.
Pack the ingredients and wrap separately and assemble it at work when lunch rolls around!
At first I wanted to propose an immersive experience that would call the whole body to action, but then when we started to assemble it at Zipper Gallery, the project became more ambitious.
Assemble it at the last minute to keep it totally fresh.
Assemble it at the town, and Pack-A-Punch any desired weapons.
In the past two decades, the proteins that are responsible for transporting LPS across the cellular envelope and assembling it at the cell surface in Escherichia coli have been identified, but it remains unclear how they function.
So to assemble it he arrived at the gig hours before anyone else and he was there for hours afterwards taking it all apart again.
When building a portfolio, you can assemble it one stock at a time or buy exchange-traded funds, pools of securities that trade on stock exchanges.
Fully restored and completely assembled, it went on display at the newly opened Smithsonian air museum branch outside Dulles Airport in Northern Virginia.
In a statement posted on its website on September 23, the Hellenic Special Forces Reserve Union (KEED) says it will assemble at 4pm at Syntagma Square in order to demand "the immediate resignation of the government" because it has failed in its duty to provide "health, education, justice and security" that it says it is obliged to do under article 22 of the constitution.
