I'm using Gmail for handling all my emails. At work though I was given a new outlook.office account (I don't know what is the precise status of the email accounts supplied by my work, but they are accessed by using something like https://outlook.office.com/owa/?realm=<url of work>).

I want to use the Gmail client, so when I send emails, they will be sent as if they're from my work emails.

This is usually possible with the "Send As" functionality in gmail account setting. But I can't find how to do it for outlook.office email addresses.

Is this even possible? And how?