I have XrmToolBox 2015 and I want to add a new dll (new functionality) to my tool, but I can't find any documentation about it, how can I do that?
** I need to add DeltaAssemblyvsCrm plugin, FYI
You should be able to install any applicable plugins to XrmToolBox from Plugins store. Read more
The Plugins Store is located in the menu Tools > Plugins Store