When someone situates something, they put it in a particular place or position.
If someone situates something, they are arranging it carefully or intentionally.
Examples:
She situates the vase on the table.
Can you situate the chairs around the campfire?
He situates the book on the shelf.
The cat situates itself on the warm blanket.
She situates the toys in a neat row.
He situates the hat on his head.