Filter Parents and Filter Children

I use the modules VIEWS and TAXONOMY (NON CATEGORY)
And my vocabulary is defined this way:

Fear (vocabulary)
Companies
--Restaurants
--Hotels
--Bars
People
--Chef
--Barman
Etc.

How can I make me that the filters of the VIEWS only show the categories PARENTS?
And later, in the following view, How I can make that the filters only show the categories CHILDREN after receiving the argument FILTER0 of the previous view?

That they see this way each other:
VIEW1 filter:
Fear:
Companies
People

VIEW2 filter (suppose that in the previous one it was selected People).
Fear:
Chef
Barman