Using InDesign file with different people

See these threads on cloud collaboration:

https://community.adobe.com/t5/indesign-discussions/do-indesign-links-work-with-adobe-cloud-multiple-users/td-p/11521179

https://community.adobe.com/t5/indesign-discussions/idlk-files-over-cloud-storage/td-p/11307839

No, simultaneous users can't work on the same InDesign file. You need to split it in different parts, unless your goal is to work on the text only (not on the layout, nor the size of the text frames); then you could use InCopy and assign different parts of the InDesign file to different inCopy users.