a normal passport request. you can either send in your passport and they will send it back with the visa.
or you can go to the embassy in person and hand in your passport and pick it up later the same day.
but for the arc. if they ask for the arc by itself. once its approved they will ask PPR either mail in. or pick up in person.
but if they ask for arc and PPR together, than your only option is to send in your passport with the arc and they will hold it till its approved and put ur visa in your passport and than i think they call you or email you to either come pick it up or have it delivered back to you.
but yeah thats pretty much it just give them your passport so they can put the visa in it and pick it up and your good to go