Coding Sparkfun LSM9DS1 Accelerometer using Arduino Portenta H7 Lite

Hello everyone I am supposed to code a Sparkfun LSM9DS1 Accelerometer using a Arduino Portenta H7. So far, I've downloaded the library for the accelerometer and I'm using I2C communications. I'm not sure if the library alone is enough for the accelerometer to display the data on my laptop. When I try to open the serial monitor like in this video, https://www.youtube.com/watch?v=oJmjFfpB3Pc&list=PL9pq-fYnKeevRRiCxpqdLhvGHBBi-Tvc0&index=2 It just shows me a bar that says ' Message (Enter to send message to 'Arduino Portenta H7 on COM3'. I am aware that the video is using 2 different types of devices, shouldn't mine work similarly? It would be really great if someone could help on this topic.