How do I change the default size of a comment box in Excel? To change the default size of a comment box in Excel, select the cell where the comment has been placed.

When you try to edit a legend using the Format Legend dialog box, Excel lets you change the legend's color, border and shadow, along with several other stylistic elements.

How to Make Colors Change With Validation in Excel. Excel's conditional formatting tool applies formatting depending on cells' contents. Validation rules can change cells font, style, size or border.

You can change or set the default font and size in Microsoft Excel or Excel 365using Registry and Group Policy. Learn how!