Emailing Groups?

Hello! So I am new to Zoho and plan to migrate our company to it. We have many users and everyone is in a group of some sort. I looked at the Organization groups - A section where every employee can see if they are on zoho - but was wondering how I can email that group which would then send an email to the members in that group. There are groups such as ALL@ (Emails all employees), ITSTAFF@ (Emails all IT employees), Productionbuilding@ (Emails the members at our production facility).....etc. Is there a way to do this? Am I not seeing this somewhere?

Thanks