Adding time signature non destructive for alignment - Cubase 12

Dear Forum,

how can I avoid the shifting of the time signature markers on the right when I add signature markers in the middle of a film score project. I composed the end and would like to go on with the middle section changing time and tempo probably adding and deleting changing bars and their time signatures…

EDIT: It seems to me that the process bars dialog has an option for that: Reinterpret bars
When marking the length in the time ruler it reinterprets the 7/4 to a 4/4 for the chosen length (time) of the arrangement, not cutting out time anywhere. Hopefully that´s the correct workflow here. Please let me know!