Please consider writing these solutions in English so someone can actually follow them. You get the user to a point - and then describe something else -
Office 2016 installs fonts in each application folder not in the usual Fonts > Microsoft folder. Each app has its own fonts for sandboxing reasons.
Control-Click (Right-click) on Office 2016 app in Applications. You’ll find fonts in this location.
Contents > Resources > Fonts (Great!)
Previous versions of Microsoft stored it's fonts in the main Library/Fonts/Microsoft folder. (so now I'm distracted with this useless information - Am I supposed to go there? Who knows?)
Deleting the old Microsoft Fonts folder might help if you are no longer using Office 2011. (But you didn't identify exactly what to delete!!! Do you mean the folder you took the user to, or the other one you just brought up?)
- Office does not need ANY of its fonts to “run.” However, various features of Office will be broken or display poorly unless you leave the fonts it installs in place. (What does this mean?)
- I would caution you not to disable the Chinese/Japanese fonts. These are required to produce certain special characters. (What? There is no reference to this anywhere...useless)