If this is from a Generic Inquiry screen, go to the actual generic inquiry (quickest way is under Customization > Edit Generic Inquiry)
 

Then, on the Generic Inquiry, update / remove the side panels you no longer want to use on the Navigation tab:
 

You may also need to update navigation items on the Results tab.

Hi Megan,

No, we want to hide in entry form screens like Sales Orders.

There is no out of the box option available to hide/ remove the default side panel.

You would need to explore customization to remove side panel from required screens.

Hi @ckwiat46 ,

We can hide the side panel by modifying the respective Action from Customization editor.

It is removing Side panels action But empty Panel is remains there. 

Hi @Dipak Nilkanth Thank you for the reply. We have done that, but the side panel column/bar still shows, just with no action options in there, we are trying to simply hide the entire bar when empty. Any ideas how best to do that? 

Hi @ckwiat46 were you able to find a solution? Thank you!

@ckwiat46   This requires code-level customization and cannot be accomplished through the UI or the customization editor.

You'll need to extend the workflow and remove these side panels from the Screen Configuration. If you need any assistance with extending the workflows, I'd be happy to help.