Assign a Picture to a Control
Right-click the control that you want to assign a picture to, and then click Advanced Properties.
In the Properties dialog box, select the Picture property and then click the ellipses ([...]) button that is next to the Apply box.
In the Load Picture dialog box, type the name of the picture in the File name box.
Note If the picture is larger than the control, Outlook scales the picture to fit the control.
For more information about the Picture property to set for a specific control, see the following:
The Picture property for the CommandButton control.
The Picture property for the OptionButton control.
The Picture property for the ToggleButton control.
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