How do I use HDL to create new Payroll Balances and Balance Feeds?

We need to add some Payroll Balances to accumulate a half-dozen categories of earnings in order to satisfy annual State Controller's Government Compensation in California reporting requirements (GCC (ca.gov)) since Oracle doesn't support this regulatory reporting out-of-the-box.

Each new Balance will be fed by a couple dozen Elements and will require dimensions tied to the Relationship (i.e. one per Employee) -- quarter-to-date, calendar year-to-date, and pay period.

We're a mid-size municipality and we generally aren't doing anything fancy. We really just need some straightforward Balances. Unfortunately, I can't tell from reading the documentation what kind of value should populate a few of the columns. And I keep getting errors when I attempt to