To Set Up a Clash Detection Job

Select Modeling > Analyze > Clash Detection > Clash Detection to open the Clash Detection dialog.
Click the New icon.
A new entry is added to the job list with the default name, Untitled Job. Untitled Job is highlighted and ready to be renamed.
Give the new job entry a descriptive name.
Note: Once you create a job, select the clash criteria and suppression rules, you can run the clash detection job.