You can delete cells by choosing Sheet - Delete Cells.
This area contains the options available for inserting cells into a sheet. The cell quantity and position is defined by selecting a cell range in the sheet beforehand.
Inserts an entire row. The position of the row is determined by the selection on the sheet. The number of rows inserted depends on how many rows are selected. The contents of the original rows are moved downwards.
This command is equivalent to Rows Above.
This command is equivalent to Columns Before.