Driver's side

Remove the driver's side defogger vent trim (A).
1. Pry out the rear edge of the trim to detach the hooks (B) with the appropriate trim tool.
2. Pull out the upper edge of the trim, then pull it out.
  
  Fig 1: Identifying Driver's Side Defogger Vent Trim And Hooks
  Courtesy of AMERICAN HONDA MOTOR CO., INC.
Install the trim in the reverse order of removal, and push the hooks into place securely.