Code:
.AddTab "tab2", "Tab 2", True
.AddCat "cat2", "tab2", "Group 1", False, ""
.AddButton "but8", "cat2", "Search1", "save", False, "", False
.AddCat "cat3", "tab2", "Group 2", False, ""
.AddButton "but9", "cat3", "Search2", "save", False, "", False
'----------------------
.AddTab "tab3", "Tab 3", True
.AddCat "cat4", "tab3", "Group 3", False, ""
.AddButton "but10", "cat4", "Search3", "save", False, "", False
.AddCat "cat5", "tab3", "Group 4", False, ""
.AddButton "but11", "cat5", "Search4", "save", False, "", False