First of all I am using Samsung Galaxy Note 2 N7105.
What I do is I make 2 profile.
1. Silent mode
+, Time (select silent time), back, + new task, +, audio, silent mode, @Mode: select ON. Back 2x.
2. Important person calls
+,
state, phone, call, @NUMBER tab the magnifying & select "Any
favourite Contact", back, + new task, +, audio, silent mode, @Mode:
select OFF. Back 2x.
Now it's done, but REMEMBER to open your
contact and tab the person you accept the calls and tab the star on the
top right. Without doing this, they will not be able to contact you.