You can connect your EzzyBills subscription to WorkGuru by selecting the Ezzybills icon from the integrations page.

In your EzzyBills, copy your API key from Settings -> Advanced Options -> Misc

When prompted enter your EzzyBills API Key and admin credentials and click Test Ezzy Bills Connection to confirm.  If successful, click Save Changes.

The upload option will now be available in your Project's Purchasing tab.