Znpcs sub command, action not working

I was testing my server without op permission and when i interact with an npc (znpcs plugins) he told me that i don't have permission for this sub-command can someone explain me how i can make the npc doing action without op people please ?

Quote from Adriel

Set up the permissions using a permissions plugin like LuckPerms.

Do you know what permisssion is it, i search and i found nothing about znpcs

Quote from Adriel

https://github.com/gonalez/znpcs-old/wiki/Permissions

Thanks you