Validation rules are a way to enforce data quality and business logic by preventing users from saving records that do not meet certain criteria. They can be used to require users to follow the status values as they are on the path and prevent them from reverting the case back to a previous status by using formulas that compare the old and new values of the status field. Global value picklists are a way to create and maintain picklist values that can be shared across multiple fields, but they do not enforce any logic or order on the values. Predefined field values are a way to set default values for fields on path settings, but they do not prevent users from changing them later. Dependent picklists are a way to filter the values of one picklist based on the value of another picklist, but they do not prevent users from going back to a previous value. Reference: https://help.salesforce.com/s/articleView?id=sf.validation_rules.htm&type=5

Web-to-Case allows you to create cases from a form on your website.

To create a contact and an opportunity from a lead that is associated with a campaign, and keep the campaign member history, the administrator should convert the lead from the campaign member detail page. This will automatically create a contact, an account, and an opportunity that are linked to the campaign. Deleting, cloning, or adding a contact will not preserve the campaign member history. Reference: https://help.salesforce.com/s/articleView?id=sf.campaigns_leads.htm&type=5

A master-detail relationship is a parent-child relationship in which the master object controls certain behaviors of the detail object. The master object can be a standard or custom object, but not all standard objects support being a master. Roll-up summaries are fields that calculate the sum, count, min, or max of child records. The owner field on the detail records is not available and is automatically set to the owner of the master record.

To help agents fill in event details and request dates for open house events without double-booking them, the administrator should create an approval process on the Campaign object, which is used to manage marketing events in Salesforce. The approval process can define entry criteria based on campaign fields such as type or status, specify initial submission actions such as sending email alerts or updating fields, assign approvers who can review and approve event requests, and specify final approval actions such as creating tasks or updating fields. Creating a workflow rule, a sharing rule, or a campaign will not help agents request event dates or prevent double-booking. Reference: https://help.salesforce.com/s/articleView?id=sf.campaigns_overview.htm&type=5 https://help.salesforce.com/s/articleView?id=sf.approvals_considerations.htm&type=5