several ways - take the bus to the MK - then boat to FW - then walk (short ways)
walk over to DD take the bus to SSR - then this bus will let you off at the Reception Outpost (where the check in, horses for rent and kennel are located) - then you need to take another bus to the Settlement Depost - then you have a longer walk - (past the petting zoo) to Pioneer Hall. this is also the way for Epcot.
these buses will say Outpost or Depost depending upon where they are going. (I like Chip and Dale much better.....)