How to Add a Construction Stage Analysis Load Case

To perform a staged analysis for your model, do the following.

You must first generate the construction stage numbers using the Criteria > Construction Stage Analysis command. Then you must assign construction stage numbers to frame elements using the Assign > Construction Stage Numbers command.

Select Loads > Load Cases to open the Load Cases dialog.
Type a Label for the construction stage analysis.
Select the Construction Stage Analysis load case option.
Click Add.

You when analyze the model, include this load case label in the analysis load case list.