You can set analysis sequences for a model in the pre-processing stage, provided that you know all of the analyses that are required. 
Note:  Selecting a new analysis sequence after already performing an analysis sequence invalidates any existing results. Select Create Copy from the prompt to retain the results and create a duplicate study. 
 
The new analysis sequence is updated in the Study Tasks and Project View panes. 
CAUTION:
Running a large number of analyses simultaneously requires a large amount of run-time memory, and may cause the analysis to fail.