Hi John,
The referenced doc shows how to implement a redirect in Harvest so that Harvest forms actually can show a related item form in ALC in the forms browser (as a web app).
The screen captures (and the simpler way) to see ALC forms in Harvest workbench is to install the ALC eclipse plugin into the Harvest workbench (which is an eclipse client). This is done using the following procedure:
https://docops.ca.com/ca-alc/3-0/en/installing/install-the-ca-alc-client-plugin-for-eclipse
Note: there may be slight differences installing eclipse plugins in the Harvest workbench due to differences in the base eclipse version.
Hope that helps,
Vaughn