It allows you to enable or disable advanced quantity for products. However, admin can set minimum and maximum quantity with quantity step such as, minimum value as, 5, maximum value as 30 and step value as 2.5 etc.

Advanced Quantity Front end View

It allows you to enable or disable advanced quantity for products. However, admin can set minimum and maximum quantity with quantity step such as, minimum value as, 5, maximum value as 30 and step value as 2.5 etc.
Advanced Quantity Front end View