When elements are hidden, they are neither visible nor printed, but can still be selected for copying if you select the elements around them. For example, if column B is hidden, it is copied when you select columns A and C. When you need a hidden element again, you can reverse the process, and show the element.
To hide or show sheets, rows, and columns, use the options on the Format menu or the right-click (context) menu. For example, to hide a row, first select the row, and then choose Format > Row > Hide (or right-click and choose Hide).
To hide or show selected cells, choose Format > Cells from the menu bar (or right-click and choose Format Cells). On the Format Cells dialog, go to the Cell Protection tab.
Hiding or showing cells