I am not aware of such tutorial. The library our Satellites plugin is based on does not support satellites in L2 orbits. If somebody tells you it's possible, please ask them personally, and tell us. Probably just after start, while in low earth orbit, compatible orbital elements were available. But this is history now.
BTW, it may be time to update to Stellarium 25.3. It will not include JWST but whatever the ~16 versions in-between brought with them.