To insert a control into a document, do the following:
1.Place the cursor at the desired location in the document.
2.On the Insert tab, click
Content controls. When working in macOS, you can also run the Insert > Content controls command from the command menu.
3.In the sub‑menu that opens, select the desired control.
The control will be added to the specified location in the document.
To customize the settings of a control, select it by right-clicking and run the Content control settings command from the context menu.
The Content control settings window opens, the parameters of which depend on the type of control being edited.