Hi soboyle,

In addition, to visualize the concepts, perform the following test:
Create an empty file (File--> new)--> Go to the floor tab--> you will see a small arrow at the right of the name. By clicking the small arrow you have the option of view / hide other tabs--> click in the small arrow--> the floor tab will be selected--> select also the foundation tab--> draw an exterior wall--> go to the properties bar--> be sure the foundation is selected--> in your plan, you will see the wall + the foundation--> put a window / door, etc--> Go to the foundation tab--> click on the small triangle--> foundation tab will be selected--> select the floor tab also--> your plan will look in the same way in the floor tab and in the foundation tab, right? --> Now, in the foundation tab--> click on the small triangle--> unselect the floor tab--> the wall and the foundation will disappear!
This means that you can draw a wall with or without a foundation, but you can't draw a foundation without a wall. If you draw a foundation, as this step includes a wall, and the you draw a wall, you will be duplicating the process

Regarding your question how to set the wall elevation (other than move the elevation slider, your can
- Select the wall--> Edit--> Set object elevation--> write the desired elevation or
- Select the wall--> right click on the elevation slider--> write the desired elevation

Let us know if you need additional help

Patricia

using the basement floor makes sense for a zero plane. Do you advocate using auto floors, or manually adding them, it seems to confuse things mightily with auto floors on. (I know I'm confused on how they work).