You will always enter it while creating TO, or when you are confirming TO, so transactions can be LT03, LT06, LT12 etc...
What you will do is, for examle:
- Create OB delivery (VL01N)
- Create transfer order (LT03) - during this step you can specify exact storage unit and storage type/s. bin
- Confirm TO
Or for example:
- Create reservation
- Create material document by reservation
- Create TO by using LT06 - specify SU or storage type/bin
- Confirm TO (LT12) - you can also specify SU number here
Not looking at football game? :=)