It's under the residence life section. Here, at the bottom right hand corner of the page: http://housing.mcmaster.ca/Residence_life/index.html

So, the individual interview is not part of the Assessment Centre? You would have to sign up for it for another day then?

its all in one day that's why it's like 3 hours long !

Is the formal individual interview (one-on-one with the residence manager) also a part of the 3 hour assessment centre? or is it on a different day?

AnthraX, I checked online and found out that the interview does indeed take place during the assessment centre. This is why, as macbaby07 mentioned, the assessment centre is 3 hours long. It will be pretty intensive! Good luck!