add best practices

Author: arthurchi93

fern/squads.mdx

@@ -171,9 +171,9 @@ To override the configuration of _all_ assistants without modifying the underlyi
 
 **Minimize squad size** - Try to reduce the number of squad members. Only split into separate assistants when there's a clear functional boundary (lead qualification → sales → booking).
 
-**Define clear handoff conditions** - Write specific handoff descriptions that state exact trigger conditions and what information to collect before transferring. Utilize [variable extraction](/tools/handoff#variable-extraction) to save information and generate summaries during a handoff to pass to other assistants.
+**Define clear handoff conditions** - Write specific handoff descriptions that state exact trigger conditions and what information to collect before transferring. Make sure to specify this in the assistant's prompt and/or tool description. 
 
-**Engineer context carefully** - Use [context engineering](/tools/handoff#context-engineering) to control what conversation history is passed between assistants. As the context grows throughout the call, you may want to limit message history to reduce tokens, improve performance, and prevent context poisoning.
+**Engineer context carefully** - Use [context engineering](/tools/handoff#context-engineering) to control what conversation history is passed between assistants. As the context grows throughout the call, you may want to limit message history to reduce tokens, improve performance, and prevent context poisoning. Utilize [variable extraction](/tools/handoff#variable-extraction) to save information and generate summaries during a handoff to pass to other assistants.