I was wondering how to access the following subpage : Select Multiple Invoices/Prepayments
so that i can add a new custom field on the grid please? and on wich entity should i add the custom field please?


I was wondering how to access the following subpage : Select Multiple Invoices/Prepayments
so that i can add a new custom field on the grid please? and on wich entity should i add the custom field please?


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