Some was covered here, thought I should maybe open a new thread rather than tack on. https://premium.wpmudev.org/forums/topic/restricting-access-to-marketpress
I am using adminimize and members to restrict and enable pages and have "edit_pages" "edit_others_pages" " edit_published_pages" enabled for Editor.
"Store settings" is the only tab option not available to the Editor.
I wish to enable "Coupons" under the "store settings" for the editor as this is important to the client to create/maintain - all the other settings in there are set and don't require access.