You can only apply and then approved for work permits outside Canada.Thank You mate. I got your second point "#inside Canada on closed work permit condition".
So, for an applicant who is the outland applicant(PR process going on), work permit applied through online without TR, what condition apply to that applicant?
But you cannot obtain the work permit until you're IN Canada (when you cross the border, customs officers will interview and then grant you the work permit. Note that the customs officers also can deny your work permit at the border).
When you've obtained the work permits, you need to start working for the supported employer.