Segments can be added to all reports except the Multi-channel funnel report. When adding multiple segments you will get all data in segment A plus all data in segment B. One way to not have to think about overlapping data at all is to select segments that make up the entire data set, for example selecting "New Users" and "Returning Users" or "Paid" and "Organic", the the total will be correct and you can dive into the segments as well. If you don't use this approach then you have to remember to look at the Segment dimension which you will get automatically when connecting a data source. An example would be to filter on the "All users" segment when you want to see the totals and filtering on "Loyal users" when building a specific table.
To add a segment when configuring a new source, follow these steps:
- Make sure Configure sources individually is toggled at the top of the page (if you connect multiple sources)
- Then select up to 4 segments from the checkbox that will appear at top
You can also add a segment to an existing data source by clicking edit configuration.