By default (toggle switch to the left) hosts who have both yellow AND green indicated for the months
you have selected will be shown. If you move the toggle to the right ONLY hosts who have indicated
green will be shown.
Meaning of this:
By default (toggle switch to the left) will show hosts who have ANY of the months you have chosen
marked as available. This means that some of the months might be marked red (no availability.) If
you need to see ALL of the months you have selected as available move the toggle to the right.