Combo Box Mulitple Columns

Hi guys i was just needing some help with populating two columns within a combo box, i can populate the first one with no problems, but i have no idea how to even start on the second column.

here is my code so far...

Private Sub UserForm_Initialize()
Sheets("Yachts Temp").Select
    Dim wscell As Range
    For Each wscell In Range("A1:A20")
        cboYachts.AddItem (wscell.Value)
        Next
Sheets("Clients Temp").Select
    Dim wscell2 As Range
    For Each wscell2 In Range("A1:A105")
        cboSailors.AddItem (wscell2.Value)
        Next
Sheets("Races").Select
End Sub