する verb
ようきゅうする
あんまりむ理なことを要求するなよ？
Don't demand too much from him, okay?
先方は、か格の点で妥協するようこちらに要求してきています。
They are demanding we compromise on the price.
彼にお金を要求されたから、ふざけるなって言ってやったんだけど、そしたらボコボコにされて、財布から無理やりお金を盗られちゃったよ。
When he demanded money from me I told him to kiss my ass. Then I was beaten up and he forcibly stole the money from my wallet.
You hopefully know that 要求 is a demand. When you make that a verb it becomes to demand.
The reading is just the vocab word 要求. It's also the regular on'yomi jukugo reading.