Most add-ons will ask you to "target" these shape keys so they know which one to trigger when the audio hears a specific sound. 4. Running the Lip Sync Once installed and your shape keys are ready: Open the in the 3D Viewport (Press N ). Find the tab named after your add-on (e.g., "LipSync").

Before installing, you need to decide which "Auto Lip Sync" solution fits your workflow:

For an auto lip-sync tool to work, your character needs "Shape Keys." These are different poses for your mesh (e.g., 'A', 'E', 'O', 'M').

A more robust, paid suite for full facial rigging and lip-syncing.