A lookup field is a type of field that creates a relationship between two objects and allows users to select a record from one object as a value for another object. A lookup relationship creates a one-to-many relationship between two objects, where each parent record can have many child records but each child record can have only one parent record. A lookup relationship also allows limited access to child records, meaning that users can see only those child records that they have access to based on their profile permissions and sharing settings. Reference: https://help.salesforce.com/s/articleView?id=sf.relationships_lookup.htm&type=5

A lookup relationship is a type of relationship that links two objects together, but does not affect security or deletion. It can be used to create a relationship between shipments and accounts where shipments should have a lookup to accounts; this way, shipments can show related account information on their records, but when an account is deleted, the shipments remain. Accounts should have a lookup to shipments is not a valid option because it does not match the requirement of seeing all shipment items from an account page; it would show related account information on shipment records instead. Shipments should have a master-detail to accounts or accounts should have a master-detail to shipments are not valid options either because they do not match the requirement of keeping shipments when an account is deleted; they would delete shipments along with their master account records. Reference: https://help.salesforce.com/s/articleView?id=sf.relationships_lookup.htm&type=5

Chatter broadcast group is a type of group that should be created to meet this request. Chatter broadcast group is a group where only group owners and managers can create posts, but anyone can comment on posts. This can be useful for sharing important updates or announcements with a large audience without cluttering the feed with other posts. Reference: https://help.salesforce.com/s/articleView?id=sf.collab_groups_create.htm&type=5

Guided selling, validation rules, and required fields on the page layout are three options that can be used to ensure sales reps fill out key fields when working on an opportunity through the process. Guided selling allows administrators to add prompts and guidance at each stage of the path to help reps move forward with confidence. Validation rules allow administrators to enforce data quality and business logic by preventing reps from saving records that do not meet certain criteria. Required fields on the page layout allow administrators to make certain fields mandatory for reps to enter before saving records. Configuring opportunity path can help reps visualize and update key fields at each stage, but it does not make them required or prevent them from moving forward without entering them. Using flow to mark fields required is not possible because flows cannot modify page layouts or field properties. Reference: https://help.salesforce.com/s/articleView?id=sf.path_guided_selling.htm&type=5 https://help.salesforce.com/s/articleView?id=sf.validation_rules.htm&type=5 https://help.salesforce.com/s/articleView?id=sf.fields_defining_field_properties.htm&type=5