One thing that an administrator should be aware of before changing an auto-number field to text field is that this change is prevented by Salesforce; it cannot be done because it would cause data loss and inconsistency. Auto-number fields are fields that automatically assign unique numeric values to each record; they cannot be changed to text fields because text fields do not have this functionality and may allow duplicate or invalid values. Existing field values remaining unchanged, being converted, or being deleted are not things that would happen before changing an auto-number field to text field because this change cannot happen at all. Reference: https://help.salesforce.com/s/articleView?id=sf.fields_about_auto_number.htm&type=5

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

Permissions and tab visibility are two options that administrators can adjust to fully restrict access to records for certain users or profiles. Permissions determine what users can do with records, such as create, read, edit, delete, view all, or modify all. Tab visibility determines whether users can see a specific object tab in their app launcher or navigation bar. By setting permissions and tab visibility to none or hidden for deal records for service users or profiles, administrators can prevent them from accessing deal records via search or other methods. Reference: https://help.salesforce.com/s/articleView?id=sf.users_profiles_permissions.htm&type=5 https://help.salesforce.com/s/articleView?id=sf.customize_tabs.htm&type=5

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