To add several new empty rows in Timetonic, go to Table View :

At the bottom left of your table, click on the icon , while pressing the Shift key on your keyboard :

Timetonic then proposes to add new rows in increments of 10, 50, 200, 100 or 1000 rows:

These rows are automatically inserted after the last row in your spreadsheet.

If your view has default values, the rows created