Company sign-in
You manage a company whose people already have Google or Microsoft work accounts, and you want them to sign in to Plankwork with those accounts instead of separate passwords. When someone leaves, their access ends with their company account, and no forgotten password is left behind.
Company sign-in proves that your company owns its email domain, then requires Google or Microsoft for everyone on it. Two-step sign-in adds a second factor for anyone who still uses a password.
The full chapter, with every step and setting, is in the app: open your account menu and select User manual.