Setting instance folder for custom toolbox parts

Not really experienced using Toolbox parts - is there a way to set the folder for custom created (non-configuration linked) toolbox parts?  I know you can set the path in Toolbox Setup/Config, but I'd like for the parts made to be created in the same folder my current assembly is saved in.  Is this possible?

My setup is basically a weldment frame with some bolted connections - we'd like to have individual parts/drawings for each weldment piece but are fine using configurable content for the fasteners.

Thanks!

Justin

SolidworksToolbox