Even though administrative and team closure sound like they would be one and the same, they work together to make sure that everything is formal. On the administrative side of things, you and the team are making sure that all the project records are stored appropriately in your PIMS, having a final lessons-learned meeting, and making sure that all lessons learned and collected during the project are stored as well.
You are documenting lessons learned all the way through the project. During closure, you will be collating them and creating a final project report.
It’s entirely possible that you and the team will have a lessons-learned meeting or a postmortem. Postmortems usually happen in the case of a project being closed before completion or terminated early due to one of the reasons mentioned earlier, specifically starvation and integration...