Making Questions Required

Individual Questions

Select the required property. The properties menu shows always the property that is currently selected by default the would be Question Text.

Selecting the required property

Selecting the Required Property

Then for each question you can toggle the question between required and not required.

Setting required on each question

Setting required on each question

Set or unset all questions as required

A much easier way is to use the Tools menu to set all questions required or not required at once. This approach will safely only set questions to required that should be required. Note type questions and groups will not be set required.