Sub models allow you to apply different slab mesh parameters within your structure. To create sub models, see the following instructions.

1. In the Structure tree, double-click Sub Models.

   The Sub Models dialog box opens.

2. According to your needs, do one of the following:

   To	Do this
   Automatically create sub models	Click Generate.
   Manually create sub models	According to your needs, click Insert Above, or Insert Below.

3. If necessary, modify the height above the base of each level in the Level field.
4. Click OK.