Yes.
You still have to give the wall or roof a thickness, density, and of course the R-value that is the inverse of U-value. Absorptivity and color are also needed. You also must allow HAP to keep the outside and inside air films.
I assume you are talking about walls and roofs. Windows and doors have an actual entry field for overall U-value, but you still have to define solar heat gain coefficient.
Define a new (wall or roof), name it appropriately.
Choose the first default layer beneath inside air surface in the drop down menu, click it once to highlight it, and type a new layer name (Overall U Wall or something).
Fill in all four columns to the right. Enter absorptivity and color at the top.
Click each of the other layers to highlight them one at a time, and punch Delete on your keyboard to get rid of them.
When you're left with only our Overall U Wall layer and the air films, click OK.
Examples attached.
Best to you,
Goober Dave
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