I am new to In Design. I am trying to save my file as a JPEG. But when I go to Export, I do not see an options dialog box. I want to try different file sizes / resolutions. How do I find the dialog box?
What are you seeing when you export? You should get a dialog box like the one shown here, which will let you control resolution. You cannot change the size on export, but of course you can open the resulting jpg in any image editor and resize from there.