At what level besides the account level can time zone, currency and language be set?
Currency is dictated by the market each account is in. We do not support multiple currencies in a single market. Timezone is set at the master account level, so all accounts under a master account share the same timezone. If you manage accounts that span timezones, you may want to consider creating multiple master accounts and setting the timezones accordingly. Language is a user preference, though we only support specific languages per market. This means it is not set at the account level, but for each user.