Hello
The guide rather says about TSM_CHECK_IN_OUT configured at Activities button in POD. As a sample see step 10:
"The operator selects the Activities button, the TSM Check-In/Out activity and the OK button"
More information about Assembly Point and Data To Collect on assembly (you'll need to configure InvenotryID field to collect in order to see and choose an inventory id in the assembly point) you can find in this guide.
Br, Alex.