Fix a wandering mouse cursor with BTT

I just bought a $10 BTT licence and installed it on my MacBook 2020. My problem is my mouse cursor automatically moves around whilst it is on the second monitor from Huawei. It is very unproductive for me to have such a wondering cursor. I read somewhere that the BTT is the right tool to fix it, but I could not find a tutorial for it. Could anyone walk me through it? I am still new to this tool.