We have recently done ours online, for both finances and health and welfare.
Re the 'do not resuscitate' question, there is a space for you to add your own wishes as regards H and W, which will serve as guidance for your attorney.
Mine was extremely specific as to what I would or would not want, in the case of my being unable to both speak (with mental capacity) for myself and care for myself.
E.g. in the case of dementia or a disabling stroke, I emphatically do not want interventions to prolong my life - I ask for palliative care only.
Dh has used the same wording.
I dare say we have been influenced by many years of two parents with dementia, one of whom had it for around 15 years and was in a most pitiful state when she finally died at 97.
Also, re DNR, a neighbour who was resuscitated after a 2nd or 3rd heart attack, told me he wished they'd just let him die, since the after effects (cracked ribs etc.) were so,painful. He did in fact die anyway a few months later.