There are times where you may want to scale back to the free tier. To do this, click your profile image in the Top Navigation Menu, and in the dropdown menu, select Upgrade Plan. This will take you to the Plan Management page.
This page will provide you with details on each plan. Click the Select a Plan button under Seed Plan. This will open a popup.
In the popup, enter the email address you used to register your organization. This will send a one-time password to that email. Note that these passwords expire after 5 minutes.
Enter the one-time password into the popup, and then click Login. This will open a menu in the popup which gives you various options for managing your subscription.
In this menu, select the white box at the top containing your plan's name and your organization's name. This will open the Subscription Details page.
In this page, click the link labelled Edit Subscription. This will bring you to the Edit Subscription Details page.
In this next page, click the Change button, next to the white box containing your current subscription's name.
Select the Seed Plan from the dropdown and press Update, followed by Confirm. This will change your organization's plan back to the free tier.
Precautions
You may be blocked from downgrading your plan if you have more Users or Managers associated with your Organization than the Seed plan allows. To ensure your downgrade is successful, you need to manually remove users until you have no more than 10, and manually remove managers until you have no more than 4.
If you have more Labs, Challenges, or Resources than the Seed plan allows, anything above the plan's threshold will be locked until you upgrade your plan again.