Document.ContentControls (Word)
Returns a ContentControls collection that represents all the content controls in a document.
Dim objCC As ContentControl
Set objCC = ActiveDocument.ContentControls.Add(wdContentControlDropdownList)
'List entries
objCC.DropdownListEntries.Add "Cat"
objCC.DropdownListEntries.Add "Dog"
objCC.DropdownListEntries.Add "Horse"
objCC.DropdownListEntries.Add "Monkey"
objCC.DropdownListEntries.Add "Snake"
objCC.DropdownListEntries.Add "Other"