To track shoe designs by products, prevent them from being deleted, and allow multiple designs for one product across various stages, the administrator should create a custom object for shoe designs and configure a custom lookup field for shoe designs on the Product object. This will create a one-to-many relationship between products and shoe designs, and allow users to link multiple shoe designs to one product record. To prevent shoe designs from being deleted, the administrator can use validation rules or permissions. Adding a custom master-detail field for shoe designs on the Product object will create a many-to-one relationship, which is not desired. Using the standard object for designs or configuring a validation rule will not meet the requirement. Reference: https://help.salesforce.com/s/articleView?id=sf.customize_object_relationships_overview.htm&type=5

A restricted picklist is a type of picklist that enforces the integrity of the picklist values by allowing only values defined in the picklist during data entry or import operations. If the restricted picklist checkbox is checked for a picklist field, then any records with values not defined in the picklist will cause errors during import operations. However, if the restricted picklist checkbox is unchecked for a picklist field, then any records with values not defined in the picklist will be imported without errors. Reference: https://help.salesforce.com/s/articleView?id=sf.picklist_limitations.htm&type=5

To create a many-to-many relationship between two existing custom objects, the administrator needs to create a junction object that has two master-detail relationships, one to each of the custom objects. This will allow each record of one object to be linked to multiple records from another object and vice versa. Reference: https://help.salesforce.com/s/articleView?id=sf.relationships_manytomany.htm&type=5

Probability is a standard percentage field on the Opportunity object that indicates how likely an opportunity will close successfully. It is automatically calculated based on the opportunity stage unless you make it editable on page layouts. To allow sales reps to change the probability field value of their opportunities, you need to make the field editable on page layouts. Reference: https://help.salesforce.com/s/articleView?id=sf.opportunity_fields.htm&type=5 https://help.salesforce.com/s/articleView?id=sf.customize_layoutedit.htm&type=5

Escalation rules allow you to escalate cases based on certain criteria, such as time or priority. You can use escalation rules to transfer unassigned cases to the appropriate service representative within a specified time frame.