Explanation
A list view is a feature that allows users to filter and display records based on certain criteria and fields. A Kanban view is a feature that allows users to view records as cards organized by columns that represent stages in a process such as opportunity stages or case statuses. Users can switch between list view and Kanban view by clicking on a toggle button on any object tab that supports Kanban view such as opportunities or cases.
Users can also edit records by dragging and dropping cards from one column to another or by clicking on an inline edit icon on each card. In this case, the administrator can create a list view on the opportunity object that filters opportunities by expected close date in the next 90 days; and recommend users switch the view to Kanban to edit opportunities by drag and drop. References:
https://help.salesforce.com/s/articleView?id=sf.lex_list_views.htm&type=5
https://help.salesforce.com/s/articleView?id=sf.kanban_view.htm&type=5

Explanation
To enable users to add repeating tasks in Salesforce, the administrator needs to do two things: first, enable the creation of recurring tasks in activity settings under setup; second, add the create recurring series of tasks field on the page layouts for tasks. This will allow users to create a series of tasks that repeat based on a specified frequency and end date. References:
https://help.salesforce.com/s/articleView?id=sf.tasks_repeating.htm&type=5

Explanation
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.
References: https://help.salesforce.com/s/articleView?id=sf.fields_about_auto_number.htm&type=5

Explanation
Assignment rules are tools that allow administrators to automatically route records to users or queues based on certain criteria. For example, an assignment rule can assign cases to different queues based on case priority, origin, type, or other fields. Assignment rules can be triggered when records are created manually, via email, web, or API. Assignment rules consist of multiple rule entries that define the criteria and actions for each assignment scenario. References:
https://help.salesforce.com/s/articleView?id=sf.customize_leadrules.htm&type=5https://help.salesforce.com/s/ar