Ursa Major Solar (UMS) uses a public sharing model for accounts.

Update the organization-wide defaults and create a criteria based sharing rule are two actions that an app builder should complete to implement the change of moving to a more restrictive sharing model while allowing the Sales team to access all account records with the sales record type. Updating the organization-wide defaults can set the baseline level of access for accounts, and creating a criteria based sharing rule can grant additional access based on record type. Updating the Sales profile and creating an owner-based sharing rule are not necessary or sufficient actions for this change.