If you are an administrator of an organization you will have access to the Settings tile on the organization's home page and the Settings tab on the organization's profile. There are four 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.
Webhooks can be created and configured on the third screen:
The Billing screen shows the organization's current plan and also has a link to update the plan: