It's inconvenient in the neck that I need admin authorization to install Snagit upgrades on my PC. I have SnagIt 2018, and to uninstall Snagit 13, I need to call my company's IT people. It's partly my company's IT policies, but on the other hand, I can install a bunch of things such as Audacity, Arduino, etc. so it's something that Techsmith is doing that prevents me from upgrading.
I emailed tech support, and got this response, which explains it. I would still want to answer the question "just this user" or "all users" rather than have to call IT.
"The reason for required
administrative authorization is because Snagit installs itself in the local
system files rather than in the users files (This is so that all user accounts
on one machine can use Snagit without multiple installs)"