Administrators of gateway clusters have the ability to add or remove data sources, modify the authentication to those sources, and to enable or disable users or groups of users from utilizing the cluster. Given the importance of these responsibilities, more than one gateway administrator, such as a security group of admins, is strongly recommended. For example, in the event that the credentials for a data source need to be revised or when a data source needs to reference a different database, only an admin for the gateway will be able to implement these changes in the Manage gateways portal. 

In the following image from the Manage gateways portal in Power BI, a single security group (On-Premises Gateway Admins) has been added as the administrator of the Frontline Gateway cluster:

As described in the On-premises data gateway planning section earlier in this chapter, this security group currently includes two users (Anna Sanders and Brett Powell).