I was on the same page as this user. I mean, I knew what a line parameter is, and what the command line is, I was just missing the connection between the command line and a mod organizer (I use MO2 and know how to set up an executable). It just so happens that the 2 guides/pages I was referencing weren't clear on that. I haven't seen the SSE guide shown in the screenshot user z929669 posted in the fourth reply to this topic.
https://dyndolod.info/Help/xLODGen#Installation
https://stepmodifications.org/forum/topic/13451-xlodgen-terrain-lod-beta-130-for-fnv-fo3-fo4-fo4vr-tes5-sse-tes5vr-enderal-enderalse/