Hi patricia.,

You can define the handling unit type id you need to store in the particular bin from the Warehouse Navigator>> Bin level

Then the bin capacity needs to be defined as per the requirement.

Bin Capacity means the entered number is the capacity, i.e. maximum number of top-level handling units, that is allowed on a location for a certain handling unit type.  

This capacity is considered by the putaway logic. If the capacity is exceeded , the location will not be available for putaway. As soon as a location capacity exists for a handling unit type and that handling unity type is moved there or planned to be moved there, the location will be dedicated only for this handling unit type.

Then the location cannot be combined with parts not packed into handling units or other handling unit types as top-level. This is useful if you for instance want one pallet per location.

This will also be validated at manual actions in inventory. For example, you cannot manually move handling units in a way that the location capacity is exceeded, unless the Exclude Storage Requirement Validation check box is ticked.

This value applies to all underlying locations in the warehouse structure, unless deviating values are set on lower levels.
 

From the site you can define the putaway logic as per the requirement.

You can find what storage optimization does briefly in the below IFS help documentation description.

https://docs.ifs.com/ifsclouddocs/default.htm?openpage=https://docs.ifs.com/ifsclouddocs/MaintainInventory/ActivityInventStorageOptimization.htm

And, before that you may need to understand what Inventory Putaway does, because the storage optimization is actually doing inventory putaway. You can find a detailed explanation on Inventory Putaway from the below IFS documentation section.

https://docs.ifs.com/ifsclouddocs/default.htm?openpage=https://docs.ifs.com/ifsclouddocs/MaintainInventory/AboutInventoryPutaway.htm

Hope this information will help.