Explanation
To enable record sharing and collaboration with groups, you need to add the groups related list to the object layouts and configure the Add Record action in the group publisher.
References: https://help.salesforce.com/s/articleView?id=sf.collab_groups_records.htm&type=5
https://help.salesforce.com/s/articleView?id=sf.collab_groups_record_actions.htm&type=5

Explanation
Flow Builder supports creating a screen that can launch a simple discount calculator when a button is clicked on an opportunity.
References: https://help.salesforce.com/s/articleView?id=sf.flow_builder_overview.htm&type=5
https://help.salesforce.com/s/articleView?id=sf.flow_distribute_button.htm&type=5

Explanation
The Opportunity Stage Duration report is a standard report that shows how long opportunities spend in each stage before they are closed. It can be used to measure the average stage duration for all closed opportunities by grouping and summarizing the data by stage name and duration fields. Using process builder to capture the daily average on each opportunity is not feasible because it would require creating multiple fields and formulas on the opportunity object and updating them every day. Adding formula fields to track stages on each opportunity is also not practical because it would require creating multiple fields and formulas on the opportunity object and maintaining them every time a stage changes. Refreshing weekly reporting snapshots for closed opportunities is not necessary because the report can run on real-time data without snapshots.
References:
https://help.salesforce.com/s/articleView?id=sf.reports_opportunity_stage_duration_report.htm&type=5

Explanation
Profile assignment and page layout assignment are two assignments that should be used to display a new record type to users. Profile assignment determines which profiles can access a record type and which record type is the default for each profile. Page layout assignment determines which page layout is assigned to each record type and profile combination. References:
https://help.salesforce.com/s/articleView?id=sf.customize_recordtype_assign.htm&type=5
https://help.salesforce.com/s/articleView?id=sf.customize_recordtype_pagelayoutassign.htm&type=5

Explanation
To assign agent capacity and skill set, the administrator should enable Omni-Channel, which is a feature that allows agents to work on multiple cases or chats at once based on their availability and expertise.
Omni-Channel can route work items to agents based on their predefined capacity and skills, ensuring that they are working on the right tasks at the right time. Knowledge Management, Escalation Rules, and Territory Management are not related to agent capacity and skill set. References:
https://help.salesforce.com/s/articleView?id=sf.omnichannel_overview.htm&type=5