Dear RayKay,
Many thanks for your reply and your help, very much appreciated!
Sorry for my late reply but I now finally had the time to check your reply and the VBA.
Unfortunately, the thing with the sections does not work . Some slides in the presentation are needed for each single team presentation, and I cannot add one slide to several sections.
Additionally, the team slides are not in one order..
But thank you nevertheless.

Best,
Sonja