You can use a Google Ads manager account to manage multiple Google Ads
sub-accounts in one place.
You can't create campaigns or advertise products directly with a manager
account, but you can use it to create campaigns on behalf of a sub-account that
you manage.
Manual steps
Sign in to the Google account you want to use as a manager account.
Visit the manager account page, then click Create a manager account.
Name your manager account. This is the name that your merchants see
as their manager in the Access & Security tab of the Google Ads UI.
Choose how to use the account. If you need to manage sub-accounts on behalf
of other advertisers, choose "Manage other people's accounts".
Select your country and time zone.
The time zone you select is used for reporting and billing, and you
can't change it later. We recommend that you choose the time zone your
business is based in.
Choose a permanent currency for your account billing.
We recommend that you choose the currency you use for business. Sub-accounts
are billed in their own currencies.
Click SUBMIT.
Automatic steps
Not available for this process.
You can't create manager accounts through the Google Ads API. You can use the
API to create sub-accounts
and link them to an existing manager account.