So I'm the top moderator on a somewhat large survival server. Recently, I decided to op a long time player so he could /ban and troublemakers. However, he quickly abused the powers with /tellraw (Herobrine entered the game) and /fill. So my question is, is there a way for me to give him just /ban powers? I don't have access to the console, and the owner of the server is never online, and I sometimes won't hear from him for months. I myself am fully opped, and have access to all commands. So, is there a way for me to give him partial powers like /ban and /kick?
Note: Command Blocks are NOT enabled