email your visa office let them know that you have a dependent on your file that needs a PPR. you can even include and explanation letter in the envelope when sending your passport pics for your Card letting them know you are yet to get a PPR letter for your dependentI did check both my email and the CIC online portal. The only document that was sent was my CoPR and I was asked to submit my photo passport and the letter (CoPR) to the Windsor address to get my PR card.
some people got an approval letter with PPR before the COPR comes