For Example -

- Create an automated action by adding
name, model(sale.order as per your requirement), trigger(update as per your requirement), Before Update Domain (Status = "draft", Status = "sent"), Filter Domain (Status = "sale"), Action to do ( Create a new Record ), Target Model ( Task as per your requirement ), Link Field ( Tasks associated to this sale (sale.order) as per your requirement),
- And in the Date to write notebook, field, evaluation type, record/value should be filled by your needs.
Note - Field -- Evaluation Type -- Record / Value
i) Title (project.task) -- Python expression -- record.name
ii) Customer (project.task) -- Python expression -- record.partner_id.id
iii) Project (project.task) -- Value -- ( add the Project id of the project you want to add the task )