I'm a new user (personal version) I'm setting up multiple accounts corresponding to various IRA and Roth IRA's for me and also for my wife. For each IRA (or Roth) there are two accounts: one brokerage account, and one mutual fund account (which includes a money market mutual fund which is the sweep account linked to the brokerage account). I'm looking for advice on
(a) the correct hierarchical relationship between the mutual fund and brokerage accounts for each IRA (or Roth), and
(b) how to integrate the "default cash account" feature for two accounts paired this way.
Thanks for your help.