Default System FONT : Change to corporate (not only office font)

Hi, to match our corporate accessibility and design rules, Iā€™m trying to change the default system font in our Nextcloud platform to Montserrat.

It can also be used as default Onlyoffice font but the main purpose is to use as default everywhere on the platform.

How/Where can we change that setting so users feel coherence through our corporate apps and platforms?

I didnā€™t see any of these settings in admin menu, so I guess it should either an add-on or hardcoded somewhere.

Update : I saw the topic about Nextcloud using native system font from 2023. Any update to this ā€œproblemā€ or way to override it? Thx

Thanks for your help