Rules Tab
The Rules tab enables you to define and customize ignore rules to be applied to clash tests. It lists all currently available rules. These can be used to make Clash Detective ignore certain model geometry during a clash test. Each of the default rules can be edited and new rules may be added as necessary.
Tip: The Rules tab displays the number of active rules. This can be a helpful reminder if you aren't seeing as many clashes as you expect.
Note: A summary of the currently selected clash test is displayed at the top of the tab. You can display the Tests panel at any time by clicking the expansion button. If a clash test has been altered in some way since being set up (this might include changing an option, or having loaded the latest revision of the model) that will mean the results may not reflect the latest model or settings, then a warning will be displayed 
. Right-clicking on this icon enables you to re-run the test.
. Right-clicking on this icon enables you to re-run the test.