The approach depends on the details and nature of the split. It's best to understand what's happening as multiple invoices under a single Funeral Record / Funeral Reference number.
1. Financial entity pays a portion and family/client pay the rest.
In this or similar circumstances we recommend that you keep everything together in the same funeral.
We recommend that you introduce the Invoice number into your Invoice document template as shown here
This will ensure that those paying get a unique invoice number associated with their payment.
Next we recommend that you create the Orders to be covered by the Financial entity first and enter the entity in the funeral contacts as a 'Commercial Client'. The person acting for the family will then be added as the Client.
The charges being shouldered by the Financial entity should be brought to a confirmed/finalised and covered by an invoice. Depending on the scope of coverage it may make sense to produce a special set of document templates for these situations - especially if they are likely to recur. When producing the invoice document, take care to select the correct addressee.
After that, the Orders covering the charges being shouldered by the family should be entered and brought to the invoice stage - the invoice number will be different.
One important point to remember is that while a funeral can have only 1 client, any number of Commercial clients can be involved.
2. Multiple entities involved
While the process described above can be continued, consider the efficiency of covering some of these separately by way of Sundries.
The funeral reference in any funeral or sundry can be easily edited by clicking on it.
Consider using the same funeral reference and simply adding -1, -2 at the end as appropriate.