Hi rssflc,
I've never used z8 so I can't speak to it specifically. However, account and asset lists can be edited.
Check the manual in the following section.
https://zorro-project.com/manual/en/account.htm

Regarding the question whether the z strategy assets can be edited is a little more nuanced and I can't find a perfect answer for you in the manual. Perpahs another poster can help.