Yes, you can redeem for anyone by adding the person in your Travel Group. You are given up to 7 slots and once you have added someone, you can't take him or her out of your Travel Group for at least 6 months.
Now your family and friends can also benefit from your GetGo points!
Want to know how Travel Group works? Check this article Managing My Travel Group.
How to add a Travel Groupmate? See the step by step process here.