To add a new row, you can just click on the
button at the bottom of your table.
When you have many rows in a table, you don't need to scroll down all the way to the bottom to add a new row. Simpl click on the
button on the bottom bar and a new row will be added automatically to the bottom of your table.
You can delete a row by clicking the
button that appears when you have a cell selected or mouse over a row.
To delete more than one row at the same time, click on the Checkbox
at the beginning of these rows.
Find the option to delete these row in the view bar. You will see the total number of the checked rows here.
You can also Unselect all if you change your mind.