The Odoo user can set up a 'ToDo' item note for any upcoming task or project. The Todo items do not appear in the tasks so they do not intervene with the current schedule.
CRM Leads & Opportunity Checklist This module useful to a list of items required, things to be done, or points to be considered, used as a reminder.
Default Tasks for Project based on created Templates. Compatible with other third-party customizations.