how to show shiny groupcheckbox choices into specific number of rows and columns

I want the choices of this groupcheckbox to be shown into 4 columns. Like 1,2 in one column- 3,4 in the 2nd column and so on. I am new to shiny dashboard, so any hint is highly appreciated.

checkboxGroupInput("myGroup",
 label ="",
 width="100px",
 inline=TRUE,
 choices = c(1,2,3,4,5,6,7,8),
 selected = c(1,8))