LS IMM Tool is an add-on that replicates the Insert Multi Mesh (IMM) functionality found in ZBrush. Built on a non-destructive Geometry Nodes foundation, it allows users to combine up to five different input meshes into a single new mesh array. The tool provides parameters to adjust the density of transition areas, the position of mid-section elements, and scaling or gap offsets between specific mesh components.

The add-on includes a custom UI for quickly creating IMM objects and updating node groups. It features tilt smoothing, UV seam property transfer, multiple start and end recognition modes, and automatic vertex welding at connection points to ensure seamless geometry. The interface supports both English and Chinese.