Signed-in users can also find this guide, with screenshots, under Help in the app.
If your company uses single sign-on, you sign in with the same account you use for email.
On the sign-in page, select Sign in with single sign-on (on your company's own address) or Use single sign-on.
If asked, enter your work email and select Continue with single sign-on.
Sign in with your company account. You come back to ParkCommand signed in.