How do I submit transcripts to schools that use CommonApp?

Does my counselor submit a transcript along with his report/recommendation? If my counselor uploads it online, do I have to still ask my school to send it to the college, or do I have nothing to worry about?

In our high school, the counselor submits the transcripts to the colleges using Naviance. You should double check on the college portal directly if they’ve received everything. College portals typically have some sort of checklist with indicators what they’ve received.