How to change current language of your store view
The 'Select Current store language' option is used to switch between languages, provided that you have multi language network of stores. Go to Settings tab of Store Manager for VirtueMart and choose the corresponding sector.
Basically, this Store Manager's feature applies when setting up store with different languages. According to this, different store's views will be created: an English store view, German Store View, Ukrainian store view and so on.