Can I add a custom sublist to a custom record? I only see an option to add an existing Saved Search as a sublist End Goal: I want to be able to open a custom record, add a sublist line with a few fields and save.

This is generally acheived by creating second custom record and making the first custom record the parent... if that is the setup you already have, then there are some checkboxes at the top of the record definitions that allow editing of child records while on the parent EDIT: On the child record definition, check the box

Allow Child Record Editing

Ok, that makes sense. I'm not sure I'll be able to achieve exactly what I've set out to do. But I understand it better now