add instructions

docs/data-ai/ai/deploy.md

@@ -74,7 +74,15 @@ You can search the machine learning models that are available to deploy on this
 
 ### Deploy a specific version of an ML model
 
-When you add
+When you add a model to the ML model service in the app interface, it automatically grabs the latest version.
+To change what version is deployed, you must edit the JSON.
+Go to the [**Models** page](https://app.viam.com/data/models) on the **DATA** tab.
+Click the **>** menu to expand the versions of a model and click the **...** menu on your desired version.
+Click **Select package JSON** to copy the package JSON.
+Then, return to your machine page.
+Enter **JSON** mode and find the `"packages"` section of your config.
+Replace `"version": "latest"` with `"version"` from the package reference you just copied, for example `"version": "2024-11-14T15-05-26"`.
+Save your config to use your specified version of the ML model.
 
 ## Next steps