Yes. If you don't put in a date of death then the accounts will not display "late of".
Other than that there is nothing further to do. You can record the assets in the usual way with income arising during the year and the costs etc can be shown as administration expenses. At the end of the year you can delete any assets sold. Once you use the system in this way we would be interested in any feed back as to how the system might be improved for those acting under an EPA.
The added advantage is that if you subsequently act for the executors you would be off to a head start and would only have to add the date of death.