Go to the rectangular marquee tool, the little dotted rectangle near the top of the tool box. Drag a rectangle where you want the outline. 3. Go to Edit>Stroke (outline) selection and choose a color and width for the stroke.
Frequent question, how do you do an outline box? Create a Rectangle Outline Using the Shape Tool Go to the options bar and click on the “Style” arrow. Select the “One Pixel Stroke, Zero Percent Fill Opacity” style. Click and drag with the tool to draw the outlined rectangle.