Where to setup TTL to 1 HAP AC Lite

Hi,

just wanna ask where am i going to set the TTL to 1 so the hops can be limited to one hop only. Im using hap ac lite.

/ip firewall mangle add action=change-ttl new-ttl=set:1 chain=postrouting …other match conditions…

(Hint: the client will undo this operation on his own Mikrotik the same way).

I see so other mikrotik router will be able to change my settings. is there are way to prevent this or another way on making sure that any router connect to my hotspot will not be able to distribute internet connection