Active 2 to register strength training

Hello! I've been with my Active 2 for a year and a half, mainly used to register my cardio exercises (bike, tape and run outdoors, other sports, etc.)

Well, today I realized that I can register my strength training, I wanted to ask the community how you use it, record the series, Or do you select the free training mode so that you only register the keystrokes and kcal?

Any advice is welcome🤧