save mark and activate them with a command

It would be nice to be able to mark cursor without having to always holding the alt button and activate them all at once with another command. Look at SublimeText PowerCursors https://packagecontrol.io/packages/PowerCursors. They save the mark and then when the user is ready he activates all of them at once. This permits to use regular command in Atom to move the cursor and unmark any cursor.
