Cannot set up selenium properly in eclipse IDE

Following a tutorial to set up selenium in the eclipse IDE but stuck on this step. Adding a build path to my project and then adding the external jar files for selenium, but I don’t know where to add it, right now I am in the ModulePath directory where JRE System Library is located, but the instructor does not see this and the only thing there for them is JRE System Library.

Am I able to just add the files here, which I have already done, or should remove them? I cannot add them directly to the JRE System Library as shown in the picture because if I click it turns the add external jars off.

Sorry if the question is not clear I am new to programming and Stack Overflow.