> ## Documentation Index > Fetch the complete documentation index at: https://docs.ctrl-hub.com/llms.txt > Use this file to discover all available pages before exploring further. # Schemes and Work Orders

**Schemes** in Ctrl Hub are shorthand for schemes of work. A scheme is a larger programme of work that is broken down into smaller **Work Orders**. You can have many schemes in Ctrl Hub. A single scheme can contain one or more **Work Orders**, which usually (but not always) relate to the work that is required on a specific **street** and the **properties** on it. Not all properties need to have **operations** carried out on them, but the scheme will contain all the properties that are affected by the work. A scheme will usually have a **start date** and an **end date** which is the period of time that the work is expected to be carried out. You can also create **categories** to give you the ability to group schemes together. This can be useful if you have a large number of schemes and you want to be able to filter them using the language of your organisation. Schemes may have [forms](/concepts/data-capture/forms) attached to them which can be completed by authorised personnel. As you will learn below, forms can also be attached to work orders - they make up part of the scheme and the captured data can contribute to the overall status of the scheme. The scheme will also have a **status** which is calculated using the completeness of the work orders it contains. ## Work Orders, Permits and Operations As mentioned, Work Orders are the tasks that need to be carried out as part of a scheme. The specific work that needs to be done is called an **operation**. Each work order can contain one or more operations. The work order itself might be subject to a **permit** which is a formal authorisation to carry out the work. The permit will have a start and end date and will be issued by the relevant authority. The permit will also have conditions that operatives need to be aware of when carrying out the work. Ctrl Hub will continually check the status of the permit and will alert you if the permit is about to expire or has expired whilst the work order remains open. Generally speaking, operatives in the field will be assigned to work orders and will complete the operations that are contained within them. When all the operations in a work order are complete, the work order will be marked as complete. Data that needs to be captured as part of the work order is configured by attaching [forms](/concepts/data-capture/forms) to the work order. These forms can be filled in by the operative in the field and will be stored against the work order. A work order will also have a **status** which is calculated using the completeness of the operations it contains.