The setup is the same both for Android and iOS.

Create or edit a OneLink template for cross-platform attribution
Only 1 OneLink template can be enabled per account for cross-platform attribution. Please, make sure you select the correct one.
For links to be used by integrated partners, must-dos:
- enable view-through attribution (VTA).
- enable equal priority for cross-platform impressions.
Create an attribution link (cross-platform impression URL)
Always turn on Cross-platform attribution
Important:
- send the non-attributed information for installs and post-install events.
- we recommend you map a frequent event, such as App Open
Set the Cross-platform view-through attribution lookback window
Add any additional attribution parameters as needed

Choose