Once additional users have been invited to your organization, follow the steps below to add your credit card.  

1. Click “Settings” and then navigate to the Billing tab.
   
   
   
   
2. Click “Upgrade Organization.” You can also click “Upgrade Organization” from the banner across the top of the screen. You will then be taken to a checkout screen to enter your credit card information. Once all information has been entered, click “Save Card & Continue To Trial.”