Assume I have three sidebarPanels, 'cond. 1', 'cond. 2' and 'treatment'.
I need to make the sidebarPanels (cond. 1 and cond. 2) disappear on choosing a value from the 'treatment' drop down menu.
If no value is chosen from treatment, I need to keep the cond. 1 and cond. 2.
How could this be done? Pl look at the screenshot for further reference.
Thanks!