In that context it's the speaker who has an expectation for what is normal for that office. The office normal and the speaker normal are the same.
There is nothing in the definition that demands normalcy to be defined by the object.
If every language on the planet put the verb at the end of a sentence and only one language set the verb in the middle of the sentence would you say it is incorrect to say speakers of that language are doing things the normal way or would you get nitpicky about it and say that's inaccurate?
Which, again, not the point, you get what I was saying, you're mostly trolling. I get it, you get it, we established this at the go. We're just trolling around the relative inaccuracy of the trolling here.
But I didn't ask if you would say it's "their normal". I asked if you would say it's "normal". Not qualifiers, no possessives. Also, I wasn't talking about how women being socially expected to alter their identity based on having sex with a man as a habit "consider it normal", I was talking about how I don't consider it normal.
So that's kind of a lot of sneaky adjustments you made there. Wanna try that again?