Farm system
 

I have been watching an Orioles rebuild play through. There the guy said that he reorganized the farm system since the Orioles had two Dominican Rookie League teams which is hard to fill.

Since he did not tell how he reorganized the farm system I wish to ask it here.

Thanks for the help.

In the league structure editor for the Dominican Rookie League find the team you want to delete follow the row across and click the delete button. Make sure you move any players you want off the team first or you will lose them.

Yeah, you can also just change the team's affiliation (deleting works though too). But, before you change the team's affiliation, move all your prospects from that team onto a farm team you'll be keeping, or else you'll lose them.
To change affiliation, go to the league you want to edit (the DSL in your case) >> League settings >> leagues and teams. There you'll see all the teams with a drop down menu to change the affiliate.

So, I have managed to edit the league structure slightly as you suggested in your Orioles rebuild. The Cubs had 4 rookie league teams, from which I kept 2, and I added a new A- team. I also had to generate new schedules due to removed and added teams.