I just recently did this last night and I'm planning on writing a quick tip for
CMSTricks in a few days.
Just go to:
Security > Manage Users
Right click on the user and select:
Update User
Go to the
Settings tab and make new settings for the user, how do you know which settings to create?
Easy go to the
System > System Settings and filter by
Rich Text Editor this will bring up all the settings for RTE, right click update settings and copy all of these to the new settings you are making for the user.
Now this users settings will override the system settings.
Here are 2 screenshots one of the default system settings I'm using and another for my user system setting. Notice how I'm using Ace as my editor instead of TinyMCE.
I hope that helps.