Hello, Thanks for your kind words. BTW, my name is Aneesh
So, commune visit. It is recommended to go within 7 days for the first visit. Nothing happens in the first visit other than securing an appointment for the actual registration. The actual registration is when you have to present your rental contract, etc. Yes, now there is an additional (contribution) fee you have to pay in the commune for registration.
http://be.brussels/about-the-region/the … the-region -> Here you can find the info about your commune hall.
And good luck with registration in Schaerbeek you will certainly have fun