Yes, this is definitely possible! For example, you have two different invoice flows because you have your own cab company, and you pick up gigs through YoungOnes. For both companies, you keep invoices to which a certain numbering is linked. The invoices you receive from us are automatically generated and will have a different numbering than the invoices you generate yourself. The invoice numbering does not have to match, but it is important that the flows are sequential. 

If you still prefer to keep both matters separate, then it is best to apply for a new VAT ID (btw-ID) for the work you do at YoungOnes. This way you can properly separate your administration. Be sure to inform us of your new VAT ID! You can change this via the app.