Bracha on Hallel

does everyone make the blessing on Hallel or just answer Amen to the Hazan and continue with Hallel? I don’t understand ,it its very frustrating this question… Everyone does something else in shul…no idea what to do

One can say the Bracha himself if he wants but if you feel that the chazan knows how to be motze you and he has in mind to do so, its better to be yotze with the chazzan because of ברוב עם הדרת מלך.