Bonjour,
Le SpinButton1 a pour propriétés : Max = 1 ; Min = -1 et SmallChange = 1
Le code du SpinButton1 (dans le module de la feuille "Tb_Infos") est :
Private Sub SpinButton1_Change()
Dim x As Range
If SpinButton1.Value = 0 Then Exit Sub
For Each x In Range("g3:g183").SpecialCells(xlCellTypeConstants, 1): x = x + SpinButton1.Value: Next
SpinButton1.Value = 0
End Sub