How to install languages in CS-C3U?

I have uploaded the lang_xx.sql files to var/database/backup/



I have tried to add languages to Administration > Languages > Languages

But somehow it does not get saved in a specific store.

I see that languages are visible in my back end if I select 'All Stores', but not if I select a specific store.



What do I do next to get the languages into specific stores / front end?

OK. Found it. I needed to select 'all stores', then go to Administration > Languages > Languages > edit > Share > Add Stores