Allow users to change only their own custom posts

Hi there! CustomPress is a great plugin!

I have a question for you.
Is it possible to allow users to change only their own custom posts?

For example, 50 different users create 50 different posts (custom post, for example "bars").
Now when the user (for example a editor or a custom Role) enters into the "custom post listing page", he should be able to see only his own posts.

It would be great to add a checkbox option into the "New post type" page, in your case:

/wp-admin/admin.php?page=ct_content_types&ct_content_type=post_type&ct_add_post_type=true

called "Enable administration only to post owner" in order to enable this function only to one or more post types.

Maybe in the future it would be great to add also role capabilities option ( for example using system role or custom roles - http://wordpress.org/plugins/user-role-editor/ ).

Thanks for your support