This was my experience 2 weeks ago. YMMV:
I reached out to LoL via their website
contact form, including my P411 information. Within a day, they replied via email and noted I didn't have any P411 Okays. I replied, acknowledging that I was new to the hobby. I let them know I was interested in an appointment the next week, and that I'd be happy to provide references in the meantime. LoL had me provide one more detail (DL/ID) at that point.
I had a few encounters, and intentionally set up a doubles session for the sake of getting established with Okays on P411.
Two days after my first contact with LoL, I received my 2nd Okay on P411. I followed up to let them know. They quickly replied back that they'd check my P411 status, and provided a phone number that I could then text 1-2 days ahead of my preferred appointment date.
And at that point I was in.
Keep in mind: This was just my experience.
Good luck!