Setup magento 2 and leave it working property in back and front end as customer request. (requested client tasks by mockups screenshot and by text instructions)
1- Developer needs to ask for approval to client when a task is completed to verify the correct function of the task as requested.
2- deliver the job with the system administrator permissions to the client
3- all tasks must be managed by task and progress manager (agreed between both parties)
4- provide instructions or manual on how to configure some essential content and attribute functions