Description
A user can create a copy of a questionnaire by selecting Copy command in its
ACTION menu:

When copying a questionnaire specify the name of the copy (the new questionnaire that will be created) and whether scenarios should be copied too.
After the copy is created it will be open for editing automatically. The user creating a copy is automatically designated its owner. The copy is not automatically re-shared with the same persons that the original was, but the new owner can add collaborators later, see sharing a questionnaire.