Check on serebii the order, the stars and the percentage of spawning. Set the randroll by summing the percentage of serebii.
For example, if you want a 5-star Raid of Shiny Kommo-o from Den 64 (sword), you have to:
1) Find the in-game ID of the den of your choice (try with den searcher of raid finder)
2) Activate it with the proper flags
3) Calculate a Shiny Seed with raid finder (I've found it faster then the raid plugin, plus with raid finder you can also select 1-2 star Pokemon, that's not possibile with the raid plugin).
4) Go on serebii den 64 page, sum all the percentage of the 5-star raid till Kommo-O. So the randroll is 55.
5) Set the stars number so they're the star you want minus 1. (4 for 5star raid, 3 for 4star raid ecc.)
6) Save and enjoy
-Manu
