How to create table in invoice

Hi,

Not certain these will help , see what you think:

https://discuss.frappe.io/t/how-to-create-a-simple-html-table-and-load-the-content-from-the-other-doctype/10628/14

https://docs.erpnext.com/docs/v13/user/manual/en/customize-erpnext/customize-form