I believe that hourly CM's can only sign in 3 people per day 14 times a year. I don't know about salaried. But discount tickets for everyone are $50 for one park, $65 for a parkhopper. Not much of a discount.
We can sign in 3 people 16 times a year and we also get complimentary passes twice a year. That is the basic deal. CM's who have verified dependents are allowed to sign in more based on the number of dependents.