In Timefold, how to deal with pinning an entity when its a chained planning variable?

I am trying to model a job assign model for job groups. In the scenario, each group contains several jobs. Each job requires different resource skill to perform.

I have a situtation where my problem domain matches closely with the road maintenance example so I’m trying to use that as my reference.

I’ve learned different models in the examples and I think I understand how Optaplanner is working. Now an idea come to me that can I model problems in a more dynamic way, which means I can simply store the entities’ info and structure including planning entities, constraints providers and so on in my database, read them, fill them with my data and start my planning when needed? It’s like building a planning frame instead of writing planning codes, which I think may be more flexible. I’m not so sure if this is an good idea considering difficulty or other perspectives, so any discussion or idea will help and be appreciated.