Hi Linda
Some will tell you that JavaScript can be employed here using
something like Window.close() as the script. But for me, the
simplest approach is to configure the end option of the project to
be to close the project. Time the last slide really super short and
make the button simply jump to the last slide.
I think whether the project closes cleanly or not will depend
on a few different factors. Browser in use, how the link was opened
to begin with, etc. I'm not certain there is a one size fits all
solution that closes cleanly with no issues.
Cheers... Rick