Instruction Manuals High Chair Tray Bouncer We recommend referring to this video on how to assemble the high chair. We recommend two people to fix the high chair, one to hold the pieces upright, and the other to fix it. Do not stand the chair on its feet before it is fixed. Doing so may cause the panel to topple and damage the pieces. If you require assembling service, the fee is $30. Please contact us at hello@hatchery.com.sg or +65-88228944.