A discount schedule allows for an item to be discounted based on how long the item has been on the sales floor. A common example is to discount items 10% after 30 days, 20% after 60 days, etc. This means the discount is relative to the item's start date rather than a specific date.
Discounts by category are a popular way to put groups of similar items on sale for a limited period of time. Commonly, jewelry or handbag categories may be discounted leading to Mother's Day or ties and suits categories leading up to Father's Day.
Tag colors are a more free-form way of grouping items together. Discounting a tag color means any items with that color will receive the discount for the selected timeframe.
Sometimes consignors will want to put their items on sale all at once. This type of discount allows that and is more commonly used by antique mall style stores.