> For the complete documentation index, see [llms.txt](https://docs.medable.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.medable.com/getting-started/cortex-user-guide/data-model-setup/add-custom-properties.md).

# Add custom properties

## Create custom properties

Custom properties can be added to standard objects (such as the Account object) and to custom objects like the Prescription object.

You can add a custom property from an object's detail view:

1. Select **Settings** > **Objects** on the left-hand menu.
2. Select the label of an object you'd like to view.
3. Scroll down to the Custom Properties pane and click **New Property**.
4. On the Create Property screen, you can fill out:
   * **Property Label:** Enter the label for your property that will be displayed in the UI.
   * **Property Name:** Enter the API name for your property.
   * **Property Type:** Select the type of property to create. For more information on property types, see primitive types in the API documentation.
   * **Property Access:** Select the access levels that users and roles have to this property.
5. Click **Create Property**. The Create Property screen is displayed.

![Create Patient Property](/files/-Mj66O6DsfHlhGXQ-6aJ)

Since we're creating a Prescription object, we'll need to create a number of properties to represent a patient's prescription. The following table shows a few properties that we'll need to create:

| Label    | Name         | Type      | Description                       |
| -------- | ------------ | --------- | --------------------------------- |
| Date     | `c_date`     | Date      | Date of the prescription          |
| Dispense | `c_dispense` | Number    | Amount to dispense per refill     |
| Patient  | `c_patient`  | Reference | Reference to the patient account  |
| Provider | `c_provider` | Reference | Reference to the provider account |
| Refills  | `c_refills`  | Number    | Number of refills                 |
| Rx       | `c_rx`       | String    | Prescription details              |

### Create a Patient property

First, we'll create the Patient property.

1. On the Create Property screen, select **Reference** from the Property Type list. More options particular to the reference property type will be displayed.
2. For Source Object, select **Account**. We want to relate the prescription to the patient's account record. 
3. For Required Access, select **Connected**. This means that whoever is creating the prescription will need to have at least that level of access to the patient's account record. 
4. For Expandable, leave it as selected. 
5. For Grant Access, select **Read**.
6. Check **Indexed**. This will allow us to query prescriptions by `patient account \_id`.
7. Click **Create Property** once the property has been configured.

After creating the Patient property, you will see it listed under Custom Properties of the object's detail view.

![Reference Property](/files/-Mj66O6EsHvfyyF5OWdJ)

### Create a Date property

Next, we'll create the Date property.

1. On the Create Property screen, select **Date** as the property type. 
2. Check **Date Only**, as this does not need to be a date-time property. 
3. Check **Indexed** so that we can query prescriptions by date.
4. Click **Create Property** once the date property has been configured.

![](/files/-Mj66O6Fs-A7z9nHxpaJ)

### Create an Rx property

Next, we'll create the Rx property. This time we will:

1. On the Create Property screen, select **String** as the property type. 
2. Check **Indexed**.
3. Enter a value in the Max Length field that is appropriate.
4. Click **Create Property** once the property has been configured.

![](/files/-Mj66O6GO_1S6ysttrjd)

### Create additional properties

Finally, create a few more properties to complete the object.

![](/files/-Mj66O6HHHVE1XLJLqNm)