Unfortunately, at the moment you don't have a feature to regenerate all payslips at once.
This is possible. When you go into regenerate, you select what document and then use the drop down boxes to select between what periods and it will regenerate all the documents between the periods selected.
This is possible. When you go into regenerate, you select what document and then use the drop down boxes to select between what periods and it will regenerate all the documents between the periods selected.