Two pies in the same graph - Highcharter

Question

I am trying to reproduce the following example of two pies in the same highchart graph with no success. An example code below. Does any one knows how to create two charts in the same chart in highcharter?

df = tibble(name = c("a","b","c"),
        a1 = c(10,12,11),
        a2 = c(22,23,22))
highchart() %>%
hc_chart(renderTo = "container", type = "pie") %>%
hc_add_series(df, hcaes(name, a1), size = 100, center = c(30,10)) %>%
hc_add_series(df, hcaes(name, a2), size = 100, center = c(10,30)) 

Answer 1

A possible solution

highcharter::hw_grid(
  hchart(df, type = "pie", mapping = hcaes(name, a1))
  ,
  hchart(df, type = "pie", mapping = hcaes(name, a2))
) %>% htmltools::browsable()