When the plugin is configured (choice of a project via the plugin menu), a new menu appears, based on all the layers that contain the original project.
Tip : a separator can be configured by creating (in the original project) a layer group named "-"
Attention : the project must be configured to record absolute paths
Option of the plugin "Load all layers item" if it is checked load all the layers of the same level submenu
"Create group" option put the new layer in a group with the name of the parent level menu (v 1.9)