5.4 Configuring Dial on Demand Routing (DDR)
5.4.3 Step 2 - Assigning the dialer list to an interface
Once the dialer-list is created, it needs to be assigned to the interface responsible for initiating the call. This associating command is shown in the graphic. 

Note: For a given protocol and a given dialer group, only one access-list can be specified in the
dialer-list command.