When using the "Import PSD" feature in Spine, you can set the origin for the root bone by using guides in your PSD file. Specifically, the first X and Y guides in the PSD are used to define the world origin in Spine. This feature is available from Spine 4.2.10-beta onwards. If guides are not present, the origin defaults to the center of the canvas. Additionally, there is consideration for an [origin] tag that can be used to set the world origin using the center of a layer with [origin] in its name, which might be implemented in future updates.
