And if you want multiple choice, use a listbox. Modified code:
Private Sub CommandButton1_Click()
Dim L As Long
For L = 0 To Me.ListBox1.ListCount - 1
If Me.ListBox1.Selected(L) = True Then
ThisWorkbook.Sheets(Me.ListBox1.List(L)).PrintOut Copies:=1, Collate:=True
End If
Next
End Sub
Private Sub UserForm_Initialize()
Dim ws As Worksheet
Me.ListBox1.MultiSelect = fmMultiSelectMulti
For Each ws In ThisWorkbook.Sheets
Me.ListBox1.AddItem ws.Name
Next
End Sub
HTH. Best wishes Harald