While pinning products in between sequences, you can either preserve the sequence layout or replace the sequence the product from the sequence with a pinned product.
Replace Mode: When products are pinned while the 'Replace' mode is enabled, the sequence layout will not be preserved and the pinned product will replace products from the sequence.- In the image below, every sequence consists of 4 products.

- When you pin a product while the 'Replace' mode is enabled, the selected product would be pinned at the target position replacing the product from the existing sequence.
Pushdown Mode: When products are pinned while the 'Pushdown' mode is enabled, the sequence layout will be preserved and the pinned product will replace products from the sequence.
- In the image below, every sequence consists of 4 products.

- When you pin a product while the 'Pushdown' mode is enabled, the selected product would be pinned at the target position and the sequence layout would be preserved.