separate variable into factors in reactable

Question

I'm using reactable which I like a lot. I grouped a table by manufacturers which worked very nicely. I would like to add another insight which I'm a bit stuck on how to do it:

While the data is grouped by the manufacturers, I'm also taking the median service_installation_time, so I know how much time is needed for each manufacturer as a median. Next, I would like to know in addition the service_installation_time per manufacturer and per HV_Board which has the levels OK, NOK, NULL. Any idea how to do this?

output$table <- renderReactable({
    reactable(df
              , searchable = TRUE
              , showPageSizeOptions = TRUE
              , groupBy = "manufacturer"
              , HV_Board = colDef(aggregate = "frequency")
              , Service_Installation_time = colDef(aggregate = "median", format = colFormat(digits = 2))
            )
  })