Any/anyone/anything = it doesn't matter who/which one
Anyone in that office will help you. = It doesn't matter which person you ask, he or she will help you.
It doesn’t matter what you give me to drink. Honestly, tea, coffee, water, anything is fine.
Note: after nobody/no-one you can use they/them/their:
Nobody wants to play football, do they?
No-one in the office has sent their Christmas cards out yet.
Vocabulary:
something (for example, a reward) is in order: : it's logical or right that something should happen (for example, that Tim should get a reward)
to return (v): to give something back