There are 2 ways you can attach the cover bar to the feeder.
Possibility 1:
Step 1: Have the feeder and cover bar ready.
Step 2: Attach the brackets to each corner of the feeder as shown.
Step 3: Slide the cover bar into the brackets from above.
Option 2:
Step 1: as above.
Step 2: Leave the brackets on the cover bar and position it on one side.
Step 3: By slightly bending the cover bar, you can also lock the cover bar on the other side.
Done! Your feeder is now protected from small and large predators :)