Explanation
Record alerts are a feature of Financial Services Cloud that let users create and display alerts on record pages to highlight important information or actions. Record alerts are based on OmniStudio, a low-code platform for building digital experiences in Salesforce. To access or extend permissions for record alerts in Financial Services Cloud, users need to have one of the following permission sets:
FSC Standard permission set: This permission set grants access to the core features of Financial Services Cloud, including record alerts. Users with this permission set can view and create record alerts on supported objects, such as accounts, contacts, financial accounts, and opportunities1.
FSC Foundations permission set: This permission set grants access to the common features of Financial Services Cloud that are shared across subverticals, such as retail banking, wealth management, and insurance. Users with this permission set can view and create record alerts on supported objects2.
OmniStudio User permission set: This permission set grants access to the OmniStudio features, such as OmniScripts, DataRaptors, Integration Procedures, and Record Alerts. Users with this permission set can view and create record alerts on any object that has the Record Alert component enabled3.
References:
FSC Standard Permission Set
FSC Foundations Permission Set
OmniStudio User Permission Set

Explanation
The following objects do support Group-Level Rollups:
Financial Accounts: You can use Group-Level Rollups to display the total balance, total market value, and total cost basis of all the financial accounts that belong to a group.
Action Plans: You can use Group-Level Rollups to display the number of action plans, the number of completed action plans, and the completion percentage of all the action plans that are associated with a group.
Opportunities: You can use Group-Level Rollups to display the total amount, expected revenue, and weighted amount of all the opportunities that are related to a group. Verified References: : Salesforce Financial Services Cloud Implementation Guide, page 80. : Salesforce Financial Services Cloud Implementation Guide, page 81. : Salesforce Financial Services Cloud Implementation Guide, page 82.