This site is not for solicitation of services or 'purchasing' development. Please do not post requesting side mods/plugins and so on. Your thread will be removed, and you will receive a warning.
Throw SF and LuckPerms into your "mods" folder, and then restart the server to activate them. You can then configure LuckPerms with your own preferred groups and permissions, and put users in those groups. Check out their wiki for more information! They have a pretty good guide explaining the process.
If you need further Pixelmon-related help, the Discord (link to the right) may also be worth joining. It's generally a fair bit more active than the forums, and replies are often quicker, too.