It has to be done manually by the stakeholders. So it could be a little awkward. And you'd have to make one with just the right amounts I suppose. Nothing is automatic, but I do remember hearing the 'return to treasury' will be one of the first ones to go up.

No guidelines about burn vs return. I figure always returning gives the highest flexibility to in terms of funding, however it's also very awkward in that if you continue to return everything, the proposal to return needs to scale with the amount of funds in the treasury until they are ready to start disbursement, or just set the number to an unreasonably high number to keep it returning funds until others are ready to be voted above.