Infinite SEO options shown for editors on subsites


I have installed Infinite SEO on a network with several sites. I want my clients to modify the title tag and stuff for the specific pages. When showing the normal page window to edit the content of a page my clients cannot see the Infinite SEO box to edit title tags e.d. They have the permissions of Editor.

Infinite SEO is activated on all separate sites.

How can I edit this?