What are the buttons on the left armrest of the LiberNovo Omni Chair for, and how do I use them? Elena Tang June 9, 2025 The buttons on the left armrest of the LiberNovo Omni Chair are designed to adjust the lumbar support strength and activate the OmniStretch massage feature, enhancing your comfort. For a detailed guide on lumbar support adjustment, check out our tutorial video from 0:21 to 0:27 at here. For instructions on using the OmniStretch massage, see the video from 3:11 to 3:17. To use the buttons, press and hold to adjust the setting, then release when it feels right for you. For further assistance, feel free to contact us at support@libernovo.com. Back to blog Share on Facebook Opens in a new window. Tweet on Twitter Opens in a new window.