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, so try to avoid selecting overlapping segments.
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)
- Select the Segment dimension and select the segments you want in the segment checkbox
You can also add a segment to an existing data source by clicking edit configuration, then you only have to do step 2 above.