Now there are some optional things to do: you can toggle whether a kit needs permission to be selected and you can set the kit position in the menu.
You can toggle the kit-requires-permission option with /swk perm <kitName>. By default, no permission is needed for a kit to be selected. So type the command if you don’t want it to require a permission.
You can set the kit position with /swk position <kitName> <position>. Replace <position> with the kit position (integer/number).
Now the only thing left, is enabling your kit. Use /swk enable <kitName> to enable the kit. You can test the kit loot with /swk load <kitName>. That will clear your inventory and add all kit items to your inventory.