In order to improve the invoice editing experience for our users, SliQ Invoicing Online
now allows line items to be inserted between existing line items. To insert between other line items, select the command drop down to the left of an existing line item (shown on the left in the picture below) and choose Insert Line Item Before
or Insert Line Item After
This feature is described in the help article below which also gives an overview of other useful line item editing features in SliQ.
Line Item Editing Overview