thank you for your answer, but unfortunately it does not answer my question. I know how to add language overrides for front- and backend.
I was asking for a possibility to limit the multilanguage feature to the frontend or certain fields (like form selects), because I don't need my backend to be translated. 95% of my labels are not displayed in frontend.
I need the multilanguage feature mainly to translate form select options or checkbox labels.
If I enable the multilanguage option of seblod, I have to create "translations" for every single field label in my backend, because my labels are all displayed starting with "COM_CCK_". This is a lot of additional work, because I use many, many fields.