Are you talking about a Automated Feeder or Gantry Feeder?
If yes, you need to prepare some snacks in the kitchen. Then bring your Feedee over to your house (the Feeder needs to be installed in a room), bring her to the room with the Feeder, show it to her, persuade her and then add the snacks into the Feeder.
You can change the room when you choose "Activity"