See also: Menu Bar And Toolbar Definition
To use Multiple invoicing in point of sale you need to create the POS printing parameters for each company.
What do you want to do?
This form is displayed when you click Manufacturer-specific > X1. Generic - After sales > Generic Aftersales parameters and you browse to + Service parameters > + POS printing parameters > [no. Company name] on the Project parameters browser. It maintains POS printing parameters records for the selected company.
Multiple invoicing
Accounts for Multiple invoicing:
>Franchise: Select a franchise from the drop down menu to be used for multiple invoicing in point of sale
Payment code: Select the Payment code to be used for multiple invoicing in point of sale
Note: If the two digit payment code on the WIP does not exist in the POS printing parameters, the payment code from the WIP lines will be compared to the one digit payment code in the parameters. If the one digit code does not exist, a record is generated for the unknown payment code and the Sales ledger account on the WIP will be used. For all lines that do not have a payment code on the WIP, one record is generated using the Sales ledger account code on the WIP also.
SL account: Select the Sales ledger account to be used for multiple invoicing in point of sale
Name: The Sales ledger account name
Right clicking the grid heading diplays a list of options available.
Selecting the insert option creates a new blank POS multiple invoice record
Complete the entry of data into the new blank POS multiple invoice record
Selecting the 
toolbar image saves the newly created POS multiple invoice record
Right clicking the grid heading diplays a list of options available.
Selecting the Delete option deleted the selected POS multiple invoice record
Selecting the toolbar image deletes the selected POS multiple invoice record