Company Upgrade lets you activate Add-Ons or Addtional Users for your Company.
Options include Add Users, Any API, Authorize.net, Auto-Import, Auto-Invoice, Auto Update, BigCommerce, Bins, CRM, Currencies, Ecwid, Folders, HubSpot, iPad, Middleware, Middleware Shipping, MySQL, MRP, Open Notify, PDF, Postgres, Prices, Shopify, Square, Stores, TaxJar, Warehouses, Web API, Web Notify, Web Server, WooCommerce, Zip-Tax.