Username and password will be the login credentials for your initial admin account.
Employee Qty is what you will be charged for and also the maximum amount of employee accounts that you will be able to create within CabuzTime. Therefore, if you think that you may grow in the near future, then you may want to increase the Qty above. Nevertheless, you can always increase your Qty at a later date.
Company Designator is three characters that you will use to identify your company. You will use this when you login.