Hi Madonna, yes I’ve worked with a few organizations that actually had this requirement. The feature that allows you to associate predecessors and successors is using a Lookup column format that “looks” to its own table (this paradigm is not something supported in most spreadsheet applications). Here is an article about how this works in Coda: https://help.coda.io/project-management/creating-dependencies-in-your-project-tracker#working-with-dependencies-in-your-tracker. If you message us in the app we’d be happy to look at your specific use case.

Coda evangelist (coda.io) | Excel user (thekeycuts.com)

Coda evangelist (coda.io) | Excel user (thekeycuts.com)