internet through the pptp client / Traffic internet a travers le client pptp du routeur

Hello everyone I am new here

I have a technical question

i just bought a mikrotik hap lite router recently


my problem
i connected the mikrotik router through the pptp client and it worked.
but now i would like the router to redistribute the connection from the pptp client

for example when I connect to wifi on my router I would like it to be the ip of the pptp client


if someone wants to help me because I am lost
please

I hope I expressed myself well because I don’t speak too much English


Thank You

Abraham