You have a couple of ways to import lineups.
One way is to duplicate a previous entry while the other is with csv import.
For csv import, just download the template file, fill it out with your choice of players and upload it back.
For those who use optimizers, we have partnered with FantasyPros and RotoWire.
Once you've sorted your lineups out, either in csv or from a previous one, hit Submit
Any errors would be indicated, like trying to submit NBA players into a MLB contest lineup.