Collaborative proofing - enlarge images for client

[Robert31514723q8b3]

With collaborative proofing is presented with a grid of small thumbnails which doesn't show sufficient detail for a selection to be made.  I can click on an image to enlarge it when logged into my account but this functionality doesn't exist for the client.  Is there a way to enlarge the thumnails or allow different permissions so that they can see more detail?

Thanks

Rob 

[Jim Wilde]

I think the client needs to be signed in in order to make selections, and when they are signed in they can also get the enlarged single image display mode.