Google ads have now made it easier for manager accounts to share the audience list across all accounts Until now, sharing audience lists across all accounts has been a complicated task to perform by the manager accounts as it required multiple steps to set up. Now, advertisers can easily do it through the settings panel.
With the introduction of this new feature called, continuous audience sharing helps share any remarketing list as created in manager accounts to all the present and future sub-accounts. You can control which audience lists are active by receiving lists from multiple manager accounts.
Sub-accounts can not share audience lists with manager accounts yet but this is something which will be available in the coming months.
Disclaimer On Sharing Remarketing List From Google
Google Ads Remarketing List
The remarketing list for search ads, also known as (RLSAs) allows marketers to target customers who have shown interest in a business.