I have already rated your plugin and support as wonderful a while ago :)
I'm using the members plugin and I have found this
where you explain how to make it work.
Problem is I do not want my contributors to have the power to either delete or edit my previously uploaded tables. I want them to have power only on the ones they have created, nothing more.
What permissions do I need to grant and not grant in order for them to
1) be able to import a table (now they get "you don't have permission")
2) be able to edit and insert their own table
It's fine if they insert existing tables, as long as they can't edit it or delete it.
As said I'm using "members".