Steaky -
That's not correct to the best of my knowledge.
Since they would be applying via the skilled class, the initial application would include the entire family (i.e. primary applicant plus spouse and children) and they would be processed together.
It's certainly an option to list part of the family as "non-accompanying" if not everyone is ready to immigrate at the same time. However this doesn't make sense in this case since they all want to arrive together. Also, even if some of the family member are non-accompaying, they still have to be medically examined.
Long story short - the application can and should include the entire family.
dhedrick -
It's my recommendation that you spend some quality time looking through the information on the following site. It's going to take some time to look through everything. However it's the best way to really understand your options. There are also online test available that allow you to enter information about the primary applicant and family to see if you have sufficient points to immigrate (in some cases you need to have a certain number of points to even qualify). You can also find out how much money you as a family will have to bring which will let you know how much you will have to save in preparation.
http://www.cic.gc.ca/english/immigrate/index.aspOnce you have familiarized yourselves with the basics, I would then recommend that you spend some time reading the following section of this site which deals with experience class immigrants:
http://www.canadavisa.com/canada-immigration-discussion-board/skilled-worker-professional-immigration-b4.0/You will be able to find a ton of good information just by reading old posts (including a number about nursing). And if you have additional questions that don't appear to be addressed, you can post your questions there. The section of the forum you have posted this question in gets relatively little traffic.