It's possible you'll work for two employers who both use ADP Workforce Now for payroll and it can be confusing how to switch between different employers accounts.
The good news is that ADP will not allow one username to be associated with two employers. You will be forced to create a different username for each employer so your Scoot username for ADP will be unique as will be your usernames for other employers.
When Scoot invites you to create an account on ADP, the set up process will ask you to create a username, the page will look like this:
If you have forgotten which username you created for Scoot's ADP then you can click here.