Permissions altered after upgrade to High Sierra

I don't find an Accessibility option in Security & Privacy. There is an Accessibility option under the Privacy tab under Security & Privacy, but it simply allows or disallows certain apps to control the computer (like Dropbox), and it does not dal with this kind of issue. This issue is now keeping me from editing an existing document. Thanks for your help. I'm still stuck, and stumped.

These are in folders on my hard drive. Thats how I organize my work flow.

I duped the doc in question ("doc copy"), dropped it in my home folder, and I was able to modify and save it. I then duped the new version ("doc copy copy"), took it back out to the folder the original doc was in, and I could modify and save the new version into a yet another version.

It is going to be complete PIA to do that to literally every doc on the drive, in order to not have to modify my workflow. Still, I appreciate the tip, thank you.

Is there any way to simply turn off the restriction?

I am finding that if I move a folder to the Home Folder, it copies instead of moving. If I rename the old one "old" and the new one "new", thenI move the new one back to the original location, my user name is listed in GetInfo again, with "me" in parentheses, unlike before when only "system", "staff" and "everyone" are listed. I am going to research more as to why this was changed, and what can be done about it. It is really hampering my work flow. I am the only user on my computer, on several in my home/office.

Thanks so much for your help. I'll update here in case it is of any help to anyone.