Webhelp: How do you get the cursor to automatically move to the Index Search Field?

We recently upgraded from RoboHelp X5 to 10, and we noticed that when the end-user clicks on "Index", the cursor previously would automatically move to the search field, where the user could start typing their requested index keyword; however, now, the user must cilck in the text box before they can start typing.  Was wondering if there is a setting in RoboHelp 10 where we could enable the cursor to once again, automatically go to the text box?