Fill in purchase invoices in the accounts

Expenses>Unprocessed expenses>Upload expenses: upload digital invoice. Then click on the invoice and enter the details?

Thanks for the information. But I know from my previous experience (secondary education) that you have specific accounting lines for certain costs/income. Does this happen automatically in Dexxter or do we have to specify this ourselves?

I suspect these are the different 'cost categories' in Dexxter.