Each month, I want to update my total investment account balances (there are 4). I'm not interested in tracking my holdings in each account (the brokerage already does this), I just want to enter the total balances at the end of each month. The end goal would be to see the monthly change in value for each account over a year's time.
Despite this being a seemingly simple task, I am unable to figure out how to accomplish this. I added the investment accounts as manual investment accounts but perhaps they should be added as something else? Any advice appreciated!