By setting Account Manager restrictions, users can then only access records they're the Account Manager of.
Prerequisites
You'll need CRM Admin rights in order to follow the steps in this article
Step 1: Go to Settings Centre
Go to the User Management section of System Settings, found here. This will give you a list of all Users where you can 'Show Details' of the User you wish to add Account Manager settings to.
Step 2: Enabling Account Manager Restrictions
Once within the CRM user's settings, you can view their CRM permissions as well as Account Manager Restrictions. Firstly, the User must already be an Account Manager and then you can tick to have them restricted by Account Manager.
Now your User can only see data for Companies they are set as the Account Manager for. If they do not have any Companies for which they are Account Managers then they will not see Customer data in the CRM. An Admin can assign Companies to this user from the Account Manager dropdown or by using our Bulk Updater tool which can be reviewed here.