Might be outside of this topic, but I disagree :)

I love competitions. But I do them to learn not to "compete". I do jiujitsu because it's a never ending problem to solve. A brain exercise with consequences. Chess with the body.

More on the how to set up a comp.

I have hosted lots of competitions in my time, since I was a white belt. I recommend you start out by doing some easy round-robin inter-club comps, gain some experience. Once you're comfortable, invite other academies to join. You can also do simple super fight style competitions in your club, that's very easy to set up, I've done lots of those.

Use something like Smoothcomp if it grows, it's super easy and a solid system.

Let us know how it goes!

We've had great success with inter-club competitions adopting the sub only Swiss chess system which is similar to round robin. A software to run this should be easy to find. In short, you define amount of rounds in total and how long the rounds last. I.e. 6 rounds at 6 minutes. You get 1pt for sub, 0,5 for draw (time runs out without any subs) and 0 for lose. To simulate white and black, since in chess white has an advantage at beginning, white starts standing and black starts sitting. The software takes this into consideration. After each round you get paired with someone who has equal amount of points as you, you have not fought and it tries to alternate black/white or sitting/standing for everyone.

Pros:
We ran 6-7 pairs at the same time with 1 ref.
We could include all weights, belts and sexes in the same group
The whole competition was done in 2 hours
Everyone is guarranteed 6 fights (or how many you set)
You get more evely paired as the competition goes along

Cons:
No takedowns
Everyone must adhere to the "gentleman rules", so no fake tapping or other cheats

Actually sounds pretty cool, but I still had to laugh at the notion of a "Brazilian jiu-jitsu competition running on Swiss chess system" ...in Norway(?) :D

Anyone with mats may throw a tournament.