In UP, first years are discouraged to join any organization because the university would like the freshies to concentrate on their studies first, above anything else. If the students could manage their time and acads well in their second year, then they could join any group they want to.
Being in UP, it means you have brains. And by that, it means you are capable of thinking for yourself which is good and bad. So before joining any orgs/frat/soro in school, you should think about it really hard. Think about the good points the org/frat/soro can do for you and you for them. Will you be helping other people by joining or will it only eat your time and waste your acads away? Most people join these groups to (1) have more friends and a second family (especially if your away from home), (2) to have connections and (3) to have something socio-civic or academical to spend your free time on. Making yourself busy for the right reasons isn’t bad, but just be sure your ready for it and it will not ruin you.