1. In the worksheet, select the cells that you want to annotate, and on the Review tab, in the Comments group, click the New Annotation button, as shown in Figure 1. You can create an annotation and enter the annotation in the comment box, as shown in Figure 2.
Tip: Right-click the cell that you want to add a comment to, and select the Insert Annotation command in the pop-up association menu to add a comment to the cell. Also, you can annotate cells by pressing the SHIFT+F2 key when you select a cell.
2. Select the cell that added the annotation, and then click the Delete Annotation button in the comments group on the Review tab to delete the cell's annotation, as shown in Figure 3.
Tip: Right-click the cell that you added the annotation to, and select the Delete annotation command in the associated menu to delete the annotation.