Tabs As Dropdown property

Tabs As Dropdown property is a notebook-level property that is used to group and display notebook tabs in a single tab, and is shown as a dropdown list selection for tabs.

Setting Description
True

The tab headers are grouped into a single tab, and is shown as a dropdown selection list of tabs.

False Default. Tabs are shown separately.
Note: The Hide Tabs property takes precedence over the Tab As Dropdown property. If the Hide Tabs property value is set to True, neither the tabs nor the dropdown is visible.