Question - How to create multiple select drop downs on questionnaires?

I feel like I must have missed this in the documentation somewhere, but how do you create a multiple select question?

PredefinedAnswers states that it is a single select drop down - Is my only option if multiple possibilities are required to question every single one individually?

just for the sake of clarification to other people, i believe you refer to the online questionnaire module.

yes, you have single select drop downs, not multiple select ones.

“PredefinedAnswers: you will define options that will be listed as a single select drop-down”