1-1/2 to 2 months in UK, then to Schengen for 2 weeks from UK, then back to UK for a couple more months.

Hi All, Quick question. My parents from India are here in the UK at the moment on a 2 year visit visa (reached here a couple of weeks ago). I am planning to apply for Schengen visa for them (from Belgium/Netherlands embassy as they are the only ones who process Schengen visa for non-UK residents ...