"Required" demographics - check this box and a case can not be added unless this particular demographic is satisfied.
"Household" demographic - check this box and the demographic will apply to every member in the household.
"Include OTHER field as an additional option" - check this box and your demographic will display an "Other" field along with a text box to enter that additional option.
"Add Option" link - click on this link to increase the number of options.
See screenshot - https://simon.d.pr/64NpNC

Did this answer your question?