If you are an administrator of an organization you will have access to the Settings on the organization's home page and the Settings tab on the organization's profile. There are three screens on the Settings page. The first is the Profile:
The profile is where an administrator can set or edit the organization's:
The Preferences screen is for setting access permissions to the organization and setting up people outside the organization as recipients for organization notifications.
The Billing screen shows the organization's current plan and also has a link to update the plan: