Decision-makers are the friends or family you name in your Power of Attorney documents.
If you appoint them to act jointly, it means that all decision-makers must agree and act together. If you appoint them to act severally, it means they can act separately from one another and do not need to discuss proposed decisions or agree with the other decision-makers before making a decision. It's important you think through the impacts of joint or separate decision-making and how it applies to your personal circumstances.
If you do not have this option when using the online form, this means your state has mandated this choice and so the form doesn’t provide the “severally” option.