Ok, create a admin user, apply all updates and patches, install all software and any updates for the software.
Then create the everday user and tick the allow this user to administer this computer and all of the apps will show up in the Application folder and your set.
You can also set autologin so they don't have to choose which user. Having a second user is good practice and can be invaluable when troubleshooting issues.
Twist
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Everything will be OK in the end.
If it's not OK, then it's not the end