Hi @CBrown49
You’re right to flag this workflows in HubSpot are powerful, but they’re limited to updating existing property values, not creating new dropdown options or property definitions themselves.
In your case (vendors, categories, products), that’s why it feels like double work: you’re maintaining property structures rather than just data. As @karstenkoehler mentioned, the only way to dynamically extend property options is through the HubSpot API. A private app could listen for when a new vendor/category is created, then push that option into the right property automatically.
Another workaround some teams use is creating linked custom objects instead of dropdown properties that way, adding a new vendor or category is just creating a record, not editing property definitions. This also scales better if your list grows often.
Have you considered shifting vendors/categories to custom object records instead of static property fields? That might save your client from constantly updating properties.