1. What are the relevant layers to consider when designing an Odoo application?
2. How is the developer mode enabled?
3. Where do you create a new data model?
4. How do you make a new data model available for end users to create and edit records?
5. How do you add a field to an existing form?
6. What is a domain, and where can it be used?
7. How can you set default values on the form you are navigating to?
8. How do you give a user access to a model?
9.  How can you add a Category field to the To-do Items, with possible values selectable from an options list? (The options list is editable and can be expanded by users).
10. How can you extend the to-do category model, so that the list of categories is specific for each user?