Like Mary I was looking for an answer to my IMS LTI question.
The only place I have come across anything relevant to your query is the Multi-user Word Press tool for blogs you can 'embed' in Moodle at Gavin Hendrick's site where he discusses various external tools:
and references Dr Chuck's multi user sandbox which can be used within Moodle as an IMS LTI.
This may help. Apologies, I do not have screenshots per se. Gavin's info helped me when I was creating an external tool for something else.
I also found this useful when setting up an external tool:
General LTI info (Moodle)