Collective invoices

In the course of invoicing, I would like to be able to combine several individual invoices/orders/assignments/work slips/delivery bills of a customer (e.g. several objects) in a collective invoice. Currently, a separate automatic invoice is created for each order of an object.

If a combination of several objects and service periods cannot be combined, at least one collective invoice per object (weekly main order + spontaneous individual orders + e.g. material delivery) in the overall service period, specifying the individual service periods (similar to the dynamic items) would be advantageous.