Block properties not defined within application flow

Summary

When setting up the job application flow, we are unable to activate because "block properties weren't defined for some of the blocks"

Content

Within Oracle Recruiting cloud, we are attempting to define the Job Application Flow within Setup and Maintenance>Job Application Flow Configuration.

We get the following error when attempting to activate the flow:

You can't activate this version because properties weren't defined for some of the blocks. (IRC-1590506)

My question is, how do we define these block properties? I glanced at the guide Using Hiring and Implementing Hiring, read through information on blocks and Job Application Flow, but couldn't find info on blocks properties.