According to the Salesforce documentation, the option that is not a way to assign a custom role to a user is: D) Add a user to a Custom Role directly from their User Record. A custom role is a feature that allows users to create and assign custom permissions and access levels to other users in Marketing Cloud Account Engagement. A custom role can be created and managed by the administrator in the Admin tab in Marketing Cloud Account Engagement, and it can be assigned to new or existing users. A custom role can be assigned to a user by using different methods, such as:

Edit an existing Default Role, and it will automatically convert to a Custom Role: A default role is a predefined role that comes with Marketing Cloud Account Engagement, and that has a fixed set of permissions and access levels. A default role can be edited by the administrator in the Admin tab in Marketing Cloud Account Engagement, and it will automatically convert to a custom role when the changes are saved. The administrator can then assign the custom role to a user or a group of users.

Assign new users to a previously created Custom Roles during the import process: A new user is a user that is not yet added to Marketing Cloud Account Engagement, and that needs to be created and assigned a role. A new user can be imported by the administrator in the Admin tab in Marketing Cloud Account Engagement, and they can be assigned to a previously created custom role during the import process. The administrator can use a CSV file to import multiple new users at once, and to assign them to different custom roles.

Add a batch of existing users to a Custom Role using table actions: An existing user is a user that is already added to Marketing Cloud Account Engagement, and that has a role assigned to them. An existing user can be added to a custom role by the administrator in the Admin tab in Marketing Cloud Account Engagement, and they can use the table actions to add a batch of existing users to a custom role at once. The administrator can select multiple existing users from the User List, and then click on the Change Role option in the table actions. The administrator can then choose the custom role that they want to assign to the selected users.

The option that is not a way to assign a custom role to a user is: Add a user to a Custom Role directly from their User Record. A user record is a feature that shows the detailed information and settings of a user in Marketing Cloud Account Engagement. A user record can be accessed from the Admin tab in Marketing Cloud Account Engagement, and it can show different sections of information for the user, such as details, permissions, or activity. The user record can also show the role that is assigned to the user, but it cannot be used to add a user to a custom role directly. The user record can only be used to edit the user’s information, such as name, email, password, or timezone, but not the user’s role. To add a user to a custom role, the administrator needs to use one of the methods mentioned above, such as editing an existing default role, assigning new users during the import process, or adding a batch of existing users using table actions. References: Salesforce documentation