How do I hide the additional Pulldown modules on my Splunk Interface page until user has selected the values they want from my first pulldown module? I just need to know how to hide a Pulldown module on a page and how to render it.
Basically how can I hide and unhide the pulldown modules ?
You can use the Sideview Gate module for this. In fact doing precisely this is that module's main job.
Make sure you have the latest version of Sideview Utils, and then navigate to "Module Documentation > The Gate Module > Blocking searches".
The documentation and examples on that page should give you everything you need.