Implementing Cash Flow, doubts for BS movements not present

Summary:

Content (required):

I need to implement the cash flow on FCCS. I have some doubt about all the movements related to the adjustment to net income. So, the movements related to the seeded movement "FCCS_CashFlow_AdjustmentsToNetIncome" should be all the flows for Interest, capital gain, impairment, etc. In my case, Users don't want create specific movements for BS accounts but want to link the cash flow structure directly with PL accounts.

On FCCS, I know the Cash Flow is designed to work with metadata hierarchy, but in some case where I have not a specific BS movement to map the adjustment to net income, what is the best approach?