I am interested in creating a Workflow Automation rule to send me (and other users) an email alert when a land lease payment is due.  I have my land leases set up as "recurring expenses" in Zoho Invoice, so that they automatically input (once yearly per land owner).  

I am having trouble finding a "Workflow Rule Trigger".  I feel like I need an option for "expense date" but the only choices I have are: When an Recurring Expense is: created, edited, created or edited, deleted.  I don't think any of these will trigger when the each/next recurring expense rolls around.  

Please help!