Create an editable text box in R shiny

[dollarvora]

I'm trying to create a textbox in a shiny app wherein the box appears whenever the click clicks on "create box" and the text that he enters is saved but also editable and delete-able

I'm tryng to mimic something like this

Here's a snapshot from my shiny app

I need a text box underneath the geomap and the two charts, the text box needs to be editable and deletable

I went through various forums but failed to find any help