The current end-user workflow is fairly challenging and has amble opportunities for end-user error. You can see it starting around minute 4 in this video:
https://vimeo.com/39608294

This workflow is also used with the Forge: Entities from Tables Wizard.

Here are the current steps, starting from the Forge Wizard:
http://www.screencast.com/t/mSyhEtlwfp
http://www.screencast.com/t/pNk17S4Xk9
http://www.screencast.com/t/MssISpUZW6
http://www.screencast.com/t/XxkzckHdi
http://www.screencast.com/t/j5pBIE0ESBM0
http://www.screencast.com/t/GzLvpgNv8m
http://www.screencast.com/t/6KsGhlPx
http://www.screencast.com/t/yHHPnHva
http://www.screencast.com/t/v26qYQ3Cjr
http://www.screencast.com/t/NHvDtza1