Flex2 Enhanced Flex - Preselected Button
You can enable the preselected feature at the button level. If you want the 5th button to be selected on page load, set the preselected feature to Yes. Only 1 button can be in the preselected mode at a time. The button that is in Preselected mode will have a green badge in the collapsible for that button.
Preselected
Each button will have a Preselected option. Select Yes or No. If switched to Yes, any other button that is set to Yes will be switched to No. You can only have 1 preselected button designated at time.
Setting the active button with URL Parameters
If you use the URL parameters to set the active button, for example ?f2btn=5, this will over ride the Preselected feature.