If you want to edit a selection you made in the Contact module with other selections or files, you can.
- click on 'my relationships' and select 'selections‘
- make and save a selection or select a selection already made
- click on the tab with 'actions‘

- You will be guided in logical steps to adjust the selection
- Decide whether you want to exclude or enrich the selection with another selection you have already made or with a source file. A source is a selection you have uploaded yourself.

- Select whatever your desired action is. Expand the selection by merging or shrink it by excluding
- Then click on the button with 'confirm action'. Please note, this may take some time.

- the modified list is displayed as the new selection
- If you want to see what has been modified, select the tab with the text 'mutations'. Here you will find in numbers what was added or subtracted.
