Welcome to WikiTree - I am oh-so-glad to meet you here!
We have a Holocaust project and I just added the correct category and template tags for it to James Simon's profile.
We also have a Notables project. Please see the project page at: http://www.wikitree.com/wiki/Project:Notables and contact one of the project managers about getting James Simon added to that project, as well.
I can promise you that the Holocaust project members will attempt to provide a meaningful biography for James Simon that includes as much information about him that can be found, along with the sources of it.
Here at WikiTree, the thing we do best is to collaborate. Lots of people have lots of different skills and they all contribute whatever it is they do best to improve profiles.
If you want to join the Holocaust project - we'd love to have you - check the project page at http://www.wikitree.com/wiki/Project:Holocaust and contact a project leader to join.