If you have a few apps for which you need to receive installs and post-install events, these steps have to be repeated for each of them.
We start receiving installs and events from the moment you link SearchAdsHQ with Singular.
Remember to create Custom Conversions to keep track of your events from the very start.
Log into your Singular account here https://app.singular.net/login.
Once logged in, go to the Dashboard, scroll to Attribution, click to Open a menu and select Partner Configuration.
In the Partner Configuration dashboard search for "SearchAdsHQ (by SplitMetrics)". Click on the result.
You will see a pop-up to configure Partner. Select App there, site, and insert Organization UUID there.
How to find my Organization UUID?
Go to Integrations > Hover over any MMP logo till you see View Settings button > Click.
This Organization Client ID is Organization UUID for Singular.