Do you need to display a custom wizard or a simplified form when creating a new record?
In Odoo this can be achieved by using the on_create attribute.
The on_create attribute expects an action as its value. Importantly, the action does not need to be tied to the same model, it can trigger a custom wizard instead. The only requirement is that the action must return the newly created record for the original model.
Once set, clicking New will trigger your custom workflow for creating a new record.
One place where this approach is currently used in Odoo is in the Project Kanban view, where clicking New opens a simplified popup to create a project.
Currently, the on_create attribute is supported only in a few views, like Kanban and Gantt.
It would be a great if Odoo extended this functionality to other commonly used views, such as List and Form.