CCLM - Deletion transport to decommission

Hi Team,

I trying to understand the Deletion phase of CCLM.

- I have the Custom Object list ready to be decommissioned ( wait period is over and analysis is completed)

- I understand to create a Backup transport of these objects.

Can some one help this qs

"Deletion Transport should now be generated"

Will Delete transport be generated Manually or CCLM will generate it and it can be found in Dev System? and then we have to run it across the landscape for decommissioning?