The Recharge costs feature lists expenses or bills incurred and allows you to select them to populate a sales invoice in order to recharge them to a customer.
To turn on the Recharge costs feature, please head to Settings > Configure system > Toggle Features,
then scroll down the page until you see Recharge costs and tick the checkbox beside it.
Navigate to Sales > Recharge costs and you will see a list of all expenses and costs. Use the filters to find the costs to recharge, select them with the checkboxes and then use the Add to invoice button to create the invoice.
Complete the details of the invoice as per usual adding any other lines for income. Note: you can select individual lines and re-order them by dragging & dropping. Once satisfied with the invoice click the Save button.