updateCheckboxGroupButtons(
  session,
  inputId,
  label = NULL,
  choices = NULL,
  selected = NULL,
  status = "default",
  size = "normal",
  checkIcon = list(),
  choiceNames = NULL,
  choiceValues = NULL,
  disabled = FALSE,
  disabledChoices = NULL
)

if (interactive()) {

library(shiny)
library(shinyWidgets)

# Example 1 ----

ui <- fluidPage(

  radioButtons(inputId = "up", label = "Update button :", choices = c("All", "None")),

  checkboxGroupButtons(
    inputId = "btn", label = "Power :",
    choices = c("Nuclear", "Hydro", "Solar", "Wind"),
    selected = "Hydro"
  ),

  verbatimTextOutput(outputId = "res")

)

server <- function(input,output, session){

  observeEvent(input$up, {
    if (input$up == "All"){
      updateCheckboxGroupButtons(session, "btn", selected = c("Nuclear", "Hydro", "Solar", "Wind"))
    } else {
      updateCheckboxGroupButtons(session, "btn", selected = character(0))
    }
  }, ignoreInit = TRUE)

  output$res <- renderPrint({
    input$btn
  })
}

shinyApp(ui = ui, server = server)


# Example 2 ----

library("shiny")
library("shinyWidgets")

ui <- fluidPage(
  checkboxGroupButtons(
    inputId = "somevalue",
    choices = c("A", "B", "C"),
    label = "My label"
  ),

  verbatimTextOutput(outputId = "res"),

  actionButton(inputId = "updatechoices", label = "Random choices"),
  pickerInput(
    inputId = "updateselected", label = "Update selected:",
    choices = c("A", "B", "C"), multiple = TRUE
  ),
  textInput(inputId = "updatelabel", label = "Update label")
)

server <- function(input, output, session) {

  output$res <- renderPrint({
    input$somevalue
  })

  observeEvent(input$updatechoices, {
    newchoices <- sample(letters, sample(2:6))
    updateCheckboxGroupButtons(
      session = session, inputId = "somevalue",
      choices = newchoices
    )
    updatePickerInput(
      session = session, inputId = "updateselected",
      choices = newchoices
    )
  })

  observeEvent(input$updateselected, {
    updateCheckboxGroupButtons(
      session = session, inputId = "somevalue",
      selected = input$updateselected
    )
  }, ignoreNULL = TRUE, ignoreInit = TRUE)

  observeEvent(input$updatelabel, {
    updateCheckboxGroupButtons(
      session = session, inputId = "somevalue",
      label = input$updatelabel
    )
  }, ignoreInit = TRUE)

}

shinyApp(ui = ui, server = server)

}