Hi, there!
We're renovating our kitchen and want to put a doorway from the kitchen to the dining room and it's a load bearing wall. It has a pass-thru already cut into the wall. We want to fill in about 9" of the passthru and then start the doorway from there for a total width of 51". The wall is supporting one floor above and the roof, of course

There is an attic but it's not finished and we never go up there (no storage or anything).
The total wall length is 10.5'.
A step-by-step guide would be appreciated (and maybe even a link to a CANADIAN permit guide?).
Thanks,
Nicole