The Standard account hosting package is 2 accounts regardless of whether it's a Lead/Copy from or Follower/Send to of a copier. With this package, you can create 1 copier with 1 Lead/Copy from and 1 Follower/Send to account.
It works the same way for each account hosting package. If you upgrade had the Plus account package, you could have 1 copier with 1 Lead/Copy from and 4 Follower/Send to's or 2 copiers with 2 Lead/Copy from's and 3 Follower/Send to's. The account purpose doesn't matter.