Everything about your own account lives in the menu behind your avatar, top right.
Your profile
Edit profile covers your name and personal details. My Company is separate and matters more than it looks: it's the company you sell for, and it gives Whyzer the other half of the picture when it reasons about fit between you and an account.
Notifications
The bell shows in-app notifications, mostly things finishing that took a while to generate and announcements from the Whyzer team. You can turn notifications off from the same menu if they get in the way.
Light and dark
There's a theme toggle in the top bar. It sticks between sessions.
Tours
Take a tour replays the guided walkthrough for whatever view you're on. It's the fastest way to re-learn a section you haven't touched in a while, and it doesn't change anything in your account.