You should go directly to the Manitoba PNP at http://www2.immigratemanitoba.com/browse/howtoimmigrate/pnp/ and read all the instructions on there. If there is something you can not find, you can contact them and ask.
You can apply with your family. I do not know how long it takes for Manitoba to nominate you but after you are nominated and apply for your PR with your nomination, you can see the processing times here: http://www.cic.gc.ca/english/information/times/international/04-provincial.asp If you have a valid work visa in the UAE, you are eligible for processing in Abu Dhabi but Islamabad is actually a bit faster.