# Planning
It is necessary to define **a planning margin duration** **in advance** of maintenance so that they can be planned and integrated into **planning** schedules.
To do this, enter the duration in Plan ahead by, accessible via:
**Settings > Plug-ins and options, \[\[Production]]**.
In our case, maintenance must be scheduled **200 days in advance**, for example.
When using this feature for the first time, you can **manually start the planning process** from the menu:
**Production > Machines/CMMS > Machine maintenance planning.**
This action will generate **maintenance operations** in the **planning** for all maintenance tasks whose next maintenance date is **earlier than the date entered in the Until** setting.
Once processing is complete, you will be able to view the time **slots blocked by maintenance operations** in **Production > Production Planning.**
In **Production > Manufacturing Orders**, **maintenance manufacturing orders** associated with manufacturing operations are displayed **in green**.
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Planning is also done **on a daily basis**. **Nighttime automation** allows maintenance tasks to be automatically scheduled.
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