Permissions

Granting sndrop.admin in LuckPerms grants all three child nodes with it.

Two things worth knowing

sndrop.use gates the whole command, including the admin subcommands. It is the permission on the command root, and every subcommand inherits it. If you explicitly revoke sndrop.use from a staff rank, that rank cannot run /drop reload either, even holding sndrop.admin.reload. Since sndrop.use defaults to everyone, this only happens if you deliberately negate it.

There is no bypass node. The drop restriction applies to every player without exception, including operators and players in creative mode. This is intentional: the plugin exists to make dropping impossible unless a window is open, and an exempt rank would be a hole in that. If you need one, it is a change request.