Once you have your Custom Race(s) set up:

 

Paste your Custom Race into the Show. Bring up the Custom Race Manager to the Races page:

 

 

Select the Race from your pick list on the left.  Click the [Past to Show] button. 

 

  

The prompt reminds you that you need to Select the show from the Show List:

 

  

Click [OK to Paste] to add the Race to the Show.  The Custom Race and its Defaults have been added to the Show.

 

Your Custom Race is ready for Rider Registration.