How to dispalay other Option when the Varibles from the List Box are Selected

[Gratus_tz]

Hello

So I have been working on the Alteryx App Workflow where I dragged a List Box tool to the Canvas for which it displays the Configured choices where if any Selected it is suppose to display out more Options to be completed. I don't know what Functions I should use in order to display more options to be filled so am stuck and I need help.

I have provide the Screenshot below to be considered

[Raj]

@Gratus_tz 
will you be able to share the app with sample data will be in better position to help.