Create a current state map for the mailroom operation for categories 1-3 (page 6). Start your value stream map with delivery of the mail to ING.

Additional information:
Assume 1000 pieces of mail for your inventory calculations
Receiving and transporting the mail to the mailrooms take 5 min each
Creating the calculator tapes takes 5 minutes, in 20% of the cases the totals of the two  tapes are different
Manual verification takes 1 minute, totals are rarely wrong.
Use a weighted average for the processing time of CIFing
You do not have to calculate total lead time and processing time since some of the processes are performed at the same time, but you need to show the timeline.
Show how you calculated your times