Duplicate row can be used to advantage if there are many similarities in rows. This means you only have to adjust a few cells.
You can also mark and duplicate several rows at once.
Result: The respective duplicate is inserted below the original row.
Use the arrow button next to the button to open the Duplicate row dialog. Further options are available here. You can create any number [Amount] of duplicates and you have the two insert options Insert below original line [Insert above original line] and Insert below selection.
The following examples shall clarify the functioning:
Selection of one line and 3 duplicates. If there is only one original line, the selection of Insert below original line [Insert above original line] or Insert below selection is irrelevant.
Result: The duplicates are inserted below the selected original row.
Result when selecting Insert below original line [Insert above original line] and 1 duplicate
Result for selection of Insert below selection and 1 duplicate