Loading custom plugins into embedded Kettle

Hello all,

My team is working on a project to embed Kettle in a webapp. That process is going well, but we have written several custom plugins that are not available to the Kettle execution process, so our jobs/transformations cannot load and execute. We are using 5.0.1.

Can someone please provide guidance on how to programmatically make Kettle aware of our plugins?

Thanks!
Clint