To do this, the multiple items must appear in the same locations in all
sheets of the Excel document. Right click any sheet name and choose "Select
all." Then, when you delete the contents of cell B3 in Sheet 1, the contents
of B3 in all other sheets will also be deleted. To delete non-contiguous
cells, hold down the Ctrl key as you select additional cells after the
first. Be sure to Ungroup sheets when you finish.