Is it possible to change the WAN's MAC-address on GL-MT300N-V2 for the MAC-based authorization purposes?

Is it possible to change the WAN’s MAC-address on GL-MT300N-V2 for the MAC-based authorization purposes?

Looks like I’ve already found that in Lucy under static WAN advanced settings > Override MAC

Setting can also be found in the GL web UI

Could you point me to it?

Ah… The Clone MAC button - right. See it now. Sorry.