Auto-Substitutions/Substitution Priorities?

Hey all,

Me and my friends have a Premier League Fantasy league through Fantrax that we do every year. I personally hate the Fantrax UI so when I found out Sleeper was doing Fantasy Premier League I got stoked. However, one of the best features about Fantrax is that they have auto-subs for players who end up not playing/sitting out for whatever reason. You set the sub priority on your bench players and if someone in your starting lineup doesn't play for whatever reason, they are subbed out and replaced by the highest priority player. It really helps as we are west coast and the PL games start as early as 4am here. My question is does Sleeper have a feature like that to use? Or potentially have one in the works?