DOCS-3177: Clarify reconfiguration details (#3712)

docs/architecture/viam-server.md

@@ -54,6 +54,9 @@ After start-up, `viam-server` manages:
 When you or your collaborators change the configuration of a machine in the Viam app, `viam-server` automatically synchronizes the configuration to your machine and updates the running resources within 15 seconds.
 This means you can add, modify, and remove a modular resource instance from a running machine.
 
+Reconfiguration of individual resources happens concurrently if there are no configured dependencies for any resources.
+If there are configured dependencies, resources are reconfigured in groups.
+
 You can see configuration changes made by yourself or by your collaborators by selecting **History** on the right side of your machine part's card on the **CONFIGURE** tab.
 You can also revert to an earlier configuration from the History tab.