Very Confused about jMAVSim Launch

Hello, this is a beginner question about jMAVSim and PX4 on windows.
I have somehow managed to install jmavsim by installing the px4 firmware. It opened the simulator when it finished installing and it was working well. How do I reopen it because I closed it and now it feels impossible to reopen. This is a really horrible question but hopefully someone is able to walk me through it

You may open the jMavsim simulator by running make px4fmu-v2_default jmavsim in a Linux terminal.
What do you mean by reopening it? Your host PC is Win or Linux?

Sorry, my PC is windows. I was running the make px4_sitl jmavsim in the wrong place. But after opening the terminal from run-console, it works.