I wonder if this would be feasible or not, if not I would love to see this as a feature request.
In a multisite environment you have the ability to set up a gallery path at the network settings. This is the default path for all blogs. With the placeholder %BLOG_ID% you can organize the folder structure better. The default setting should be wp-content/blogs.dir/%BLOG_ID%/files/
But I do have blogs that share the same gallery and therefore I stripped out the %BLOG_ID% and I use only "wp-content/gallery/", but now I do have a separate blog that will have an admin who is not myself and I only want to grant access to his own gallery path.
Is there any chance to get this achieved? Where can I do the settings?