When Adding/Registering/Assigning stalls:

 

When possible, do the Stall Assignment during Registration of the Riders/Horses.  It's quicker and easier than doing Stall Assignment as a separate process.  However, when it isn't possible to do so....

 

First you will be asked to select the Show where Stall Assignments are taken.  If the Stall Assignment [_] Checkbox on the Show Page is not checked, the Show(s) will not be available for selection.

 

After Selecting the Show, you will be asked to select the Rider & Horse for Stall Assignment: