How to automatically select and show other comboboxes values by clicking another combobox

Option Explicit

Dim ws As Worksheet
Dim i As Long
Dim j As Long
Dim z As Long
Dim y As Long


'~~> Load values from the worksheet into the combobox
Private Sub UserForm_Initialize()
'~~> Set this to the relevant sheet
Set ws = Sheet1

Dim lRow As Long

With ws

'name of deviceID
lRow = .Range("A" & .Rows.Count).End(xlUp).Row
For i = 1 To lRow
If Len(Trim(.Range("A" & i).Value)) <> 0 Then
ComboBox1.AddItem .Range("A" & i).Value
End If
Next i


For j = 1 To lRow
If Len(Trim(.Range("B" & j).Value)) <> 0 Then
ComboBox2.AddItem .Range("B" & j).Value
End If
Next j

For z = 1 To lRow
If Len(Trim(.Range("C" & j).Value)) <> 0 Then
ComboBox3.AddItem .Range("C" & z).Value
End If
Next z

For y = 1 To lRow
If Len(Trim(.Range("D" & y).Value)) <> 0 Then
ComboBox4.AddItem .Range("D" & y).Value
End If
Next y


End With
End Sub

'~~> Add item to combobox from textbox
Private Sub CommandButton1_Click()
If Len(Trim(TextBox1.Text)) <> 0 Then
ComboBox1.AddItem TextBox1.Text
End If
End Sub

Private Sub CommandButton2_Click()
If Len(Trim(TextBox2.Text)) <> 0 Then
ComboBox2.AddItem TextBox2.Text
End If
End Sub

Private Sub CommandButton3_Click()
If Len(Trim(TextBox3.Text)) <> 0 Then
ComboBox3.AddItem TextBox3.Text
End If
End Sub
Private Sub CommandButton4_Click()
If Len(Trim(TextBox4.Text)) <> 0 Then
ComboBox4.AddItem TextBox4.Text
End If
End Sub

'~~> Save to worksheet
Private Sub UserForm_QueryClose(Cancel As Integer, CloseMode As Integer)
ws.Columns(1).ClearContents

For i = 0 To ComboBox1.ListCount - 1
ws.Cells(i + 1, 1).Value = ComboBox1.List(i)
Next i

For j = 0 To ComboBox2.ListCount - 1
ws.Cells(j + 1, 2).Value = ComboBox2.List(j)
Next j

For z = 0 To ComboBox3.ListCount - 1
ws.Cells(z + 1, 3).Value = ComboBox3.List(z)
Next z

For y = 0 To ComboBox4.ListCount - 1
ws.Cells(y + 1, 4).Value = ComboBox4.List(y)
Next y


ThisWorkbook.Save
DoEvents
End Sub

Private Sub selectitems()

With ComboBox1


lRow = .Range("A" & .Rows.Count).End(xlUp).Row

For i = 1 to 1Row

'if one of the items in combobox1 is the same as one of the items in column A

If ComboBox1.Item = Range(1Row).Value Then

'then automatically click the items in Combobox2 and combobox 3 that lies in the same rows as the items selected in combobox1

Activate.Worksheets ("Sheet1")

Dim box1details As String

box1details =


End Sub

Private Sub selectitems()

With ComboBox1
Activate.Worksheets ("Newdevice")
Dim Y As Long

Y = Worksheets("Newdevice").Cells(Rows.Count, 1).End(xlUp).Row

For i = 1 To Y

If Worksheets("Newdevice").Cells(i, 1).Value = ComboBox1.Value Then
'if any one of the value in combobox1 is = to columnA of worksheet("newdevice")

'stuck here

'select the columns that has the same row as the one selected in columnA

ComboBox1.Value=

ComboBox2.Value=

ComboBox3.Value=

ComboBox4.Value=


End If

Next i

End Sub