The second major is a major. There are two majors at the same time. Generally speaking, it takes about 65 credits to study 1. If your major is engineering and your second major is non-engineering, such as economics, foreign languages and law, you can get a second degree certificate after graduation, that is, a double degree. 2. If your major is engineering and your second major is engineering, you will only have one degree certificate when you graduate, that is, an engineering degree certificate. Minor Major Minor generally requires about 25 credits. You will be given a minor certificate when you graduate.
Further reading: How to buy insurance, which is good, and teach you how to avoid these "pits" of insurance.