Asset Reference Manager
Hopefully it will never happen for you, but now and again a project may be sent back broken, or a folder may be deleted accidentally or a model's name is changed... in such a case this is this the tab you want to use to fix it.
The Asset Reference path is the path which the project links the .obj/pfe.
If the obj is moved or deleted the reference path source will default to absolute path due to being unable to find the initial true path of the file.
Before using the Asset Reference Manager please make sure you've added or have a fixed asset library in your project. Otherwise, Panelforge will not be able to relink the assets properly.
Using the Asset Reference Manager
Found under Project, the Asset Reference manager gives you two options, to fix 'All Panels...' or 'Selected Panels...' Generally speaking, if the asset paths are broken its best to fix all panels but to do selected panels, pick what you need from the timeline or the Panel Thumbnails palette and then chose the above tab option.
Once you access the palette the assets used within the project are listed, firstly the type of reference source. Primitive, Local or Absolute Path. Then, the path, ending with the object name for instance Stage/Decimetre/Characters/Boy.pfe. Then the number of times the asset appears in the project. These lines of assets will be back coloured, so if the link is broken they will be red, if they're working they'll be green.
There's the object to individually change the Reference Source Type, as well as the paths. There's also in the top right corner a setting's cog which will allow you to change all the source type's at once.