Contoso runs a pooled host pool with 10 session hosts serving 400 kiosk-style users who each run a single lightweight line-of-business app. Sessions are short and users connect and disconnect frequently throughout the day. Support staff report that a few session hosts occasionally become overloaded while others sit nearly idle. You need to change the host pool configuration so that new user sessions are distributed as evenly as possible across all available session hosts to smooth out the load. Which load-balancing setting should you configure on the host pool?