Create specific excel table

New to Julia
1

My problem is assigning employees to offices.

I would like to post the solution in an excel file, in this form:

image

At the moment my code looks like this:

XLSX.openxlsx("choix élèves julia.xlsx", mode="rw") do xf
    !XLSX.hassheet(xf, "ATTRIBUTION") && XLSX.addsheet!(xf, "ATTRIBUTION")
    sheet = xf["ATTRIBUTION"]
    sheet["A1", dim=2] = collect(1:4)

    for j in 1
        sheet[j+1,1] = string("Sujet ",j,":")      #string pour mettre plusieurs éléments dans une même case      
        for i in 1:e, k in 1:e
                if JuMP.value.(x[i,j])==1
                    sheet[j+1,2] = i
                    sum(x[i,j] for i in 1:e)=k
                end
            end
        end
    end
2

Also asked here: Sum of JuMP.value - #4 by Emma456. Let’s continue the discussion in that thread.