Inherit project form : Invoicing Data project.project form Inherit project form : Customer project.project form Inherit project search view : Invoicing Data project.project search account.analytic.line.search.account_id account.analytic.line search account.analytic.line.form.account_id account.analytic.line form account.analytic.line.tree.account_id account.analytic.line tree Bill Tasks Works account.analytic.line form tree,form [] {'search_default_to_invoice': 1} You will find here all works made on tasks that you can invoice. In order to invoice the time spent on a project, you must define the pricelist and the field 'Invoice Task Work' on the tab 'Billing' of the project form.