shinyapps - Make panels invisible based on an input from another panel - Shiny R -


assume have 3 sidebarpanels, 'cond. 1', 'cond. 2' , 'treatment'.

i need make sidebarpanels (cond. 1 , cond. 2) disappear on choosing value 'treatment' drop down menu.

if no value chosen treatment, need keep cond. 1 , cond. 2.

how done? pl @ screenshot further reference.

thanks!

shiny dashboard


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