The first question will lie in the company “articles” or papers that establish the rules and regs of your building.
The second part is much more difficult but far from impossble.
You will require as a high level of agreement in the building to go strata. Then you will need to establish your unit entitlements by using a chartered surveyor. And then there are about a dozen other things I haven't even though of. But it can be done. Talk to a lawyer.