Fetching details from the dictionary...

to place (in position); to fix; to set (e.g. table); to lay (foundation)
to install; to seat (someone)
to settle (upon something); to fix (e.g. one's gaze)
to apply (moxa)
庭に大きな石を据えて飾りにした。
I placed a large stone in the garden as decoration.
彼を新しいリーダーに据える計画だ。
The plan is to install him as the new leader.
大砲を丘の上に据えて敵軍を迎え撃つ準備をした。
I rested the gun on my shoulder and took aim.