Label styles, like all style objects, can be shared between drawings. To do this, call the style’s exportTo method, targeting the drawing you want to add the style to. In this example, the first style in the MajorStationLabelStyles collection is exported from the active drawing to another open drawing named Drawing1.dwg:
Dim oDocument As AeccDocument Set oDocument = oCivilApp.ActiveDocument Dim dbDestination As AeccDatabase Set dbDestination = oCivilApp.Documents("Drawing1.dwg").Database Call oDocument.AlignmentLabelStyles.MajorStationLabelStyles(0).ExportTo(dbDestination)