What drip-feed means on an SMM panel
Drip-feed delivers a quantity in parts. You might order 1,000 followers as 10 runs of 100. The panel or the provider waits between runs. The goal is a slower curve instead of one jump.
Not every service supports drip-feed. If the order form has no runs field, the service sends the full quantity on its own speed. Do not assume drip-feed because another service on the same panel has it.
Use drip-feed when the service note says the provider allows it and when the link will stay public for the whole schedule. If you delete the post on day one, later runs have nothing to deliver and may partial.
The charge is still based on the total quantity. A drip-feed order is not a discount. It is a delivery shape.