Questions re **Squads**: 1. is it necessary to put transfer instructions in the assistant's System Prompt, or are the assistantDestinations>Description sufficient please? 2. I want a totally invisible handoff, where the user does not need to speak: - assistant A receives a user message, decides to handoff to B - assistant B receives the user message, and responds to it - I'm thinking to set assistantDestinations>Message = "" and assistant.firstMessageMode=assistant-speaks-first-with-model-generated-message - is that the correct approach please? Thank you! @Sahil