Thanks Barry.

I've used this table svc_ci_assoc  to map relationships between the appliction service and the associated CI's. 

I want to map the dependencies between the application services.  I understand the type of relationship is "depends on", but i'm unclear about the specific mechanics of doing this inside of servicenow. 

I've opened up the cmdb_rel_ci relations table to map the relationship with dependencies between the application services with depends on as the type by adding records directly to that table.  

What I found interesting was, why isn't it possible to use the the "parent application service" function on the application service form to pick these services? What i've found is that those services no longer appear valid for selection once an application service has a CI mapping approach designated.  E.g. in my example used the manual method to pick one CI.  Once I did that it no longer appears as an option in that parent application service list. 

The only way i can currently add that relationship that i can see is manually adding it to the table.  Is this a bug on the application service form?

Separate note:  those example video's provide exellent overview of what you should be building out conceptually with those examples, but they are missing the concrete how to steps of building out those example models in servicenow. 

Comments on the example series which are great by the way but i think they are missing an important dimension:  

Here is how you add the application service
Here is how you add the business application
Here is how you add the CI's
Here is how you map the dependencies between CI's 
Here is how you map the dependencies between application services and the CI's
Here is how you map the application service dependencies to each other
Here is how you map the business application to the associated application services
Here is the recommended practice and order to do these things. 

The actual how-to do this step through is missing on some of these examples.  It would be overkill to do it on all of them but at least one or two that can be references in the video would be extremely helpful.