I was around through a problem in step 84, and tried to restart what I had done by going backwards. I deleted the tabs, and tried to delete the updates in Julia and so on. Eventually I tried to start all over by deleting the work I had done, and even tried to upload the same set of data, to try to make the meetings tab. When trying to make the meetings tab, I ran to the problem of not having to option to add (contact name, email, mobile, enthusiasm and comments) over to the Selected Field.
Sorry you're stuck but there's almost always a pretty easy fix! Don't try to start all over again–not necessary! Don't start undoing stuff and don't uninstall Max's Pitch Package, etc.
There's a 95% chance the same snag/fix is listed & answered in the Help FAQ. Check that first but if you can't find it there, post your problem + a screencap in the proper category below & we'll post a solution back ASAP!