Default [Q] How To: disable number notification from app simbol?

Hi Guys,

This is my first time here so i hope you will manage to help.

In my family we have a few different Galaxy phones (S3, S4 and S5).
In all of them we have a shortcut for WhatsApp and Samsung massages app.
When we receive a massage, in the top right corner of the app shortcut there is an orange number (which show the number of massages you received and not watched).

Is there a way to stop showing those orange numbers?

In Gmail app for example we don't have that problem, i can receive even 5 email and not watch them and no orange numbers shows in the shortcut corner

Hope you all familiar with the orange number to know what i mean and hope you can help me to make them disappear