Make to job jobs and avail to fulfill

Hello,
How do you view the availability to fulfill a make to job demand link?
I thought I could see in fulfillment workbench, but field help says the column ‘Avail to fulfill%’ is based off inventory and Job demand types do not go to inventory… Anyone deal do this?
Doesn’t seem fulfillment workbench can work if thats the case because I cannot release for picking if there is nothing showing available to fulfill..
We want our inventory team to know when a make to job-job is ready to be received to its consuming job.