> ## Documentation Index
> Fetch the complete documentation index at: https://docs.refold.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Build End-User Config

Config is a customization that you store for each integration of all your end-customers.

These customizations can then be used in the workflows for various use-cases.

<Tip>
  Learn more about Config and its types [here](https://docs.gocobalt.io/build/connectors/config/config).
</Tip>

Consider an example where you want to sync all the contacts of a particular list from Salesforce and your users provide you the list from which the contacts should be synced. Provided below is an example of how a select config dataslot appears to users.

<img height="200" src="https://mintcdn.com/cobalt-55/rCTCKBbhiwGPdeWb/images/implementation/config_sample.png?fit=max&auto=format&n=rCTCKBbhiwGPdeWb&q=85&s=414991255ca9f97297f2bd4350497379" alt=" Example of User Config" data-path="images/implementation/config_sample.png" />

Let's add a dataslot of Contact Lists in Salesforce.

<Tip>
  Learn more about Select Field Type [here](https://docs.gocobalt.io/build/connectors/config/field_type_intro#select-field-types).
</Tip>

<Steps>
  <Step title="Add Dataslot in Config Portal">
    Click on the `Config Portal` in Salesforce and click on `Add Field` button.
  </Step>

  <Step title="Provide details">
    Provide a name to the dataslot and select `Type` as **List Contact List Values**. Click on `Add Field`.

    <Tip>
      Click on `Edit` for the dataslot and mark it as `Required` so that the workflow will not execute if this is not selected by the users.
    </Tip>

    <img height="200" src="https://mintcdn.com/cobalt-55/rCTCKBbhiwGPdeWb/images/implementation/select_setup.png?fit=max&auto=format&n=rCTCKBbhiwGPdeWb&q=85&s=dcc91896d89d55a3d76b86a6bb3ab282" alt=" Select Config Setup" data-path="images/implementation/select_setup.png" />
  </Step>

  <Step title="Save">
    Click on `Save Field` and the dataslot is now added for your users to select a list in config.
  </Step>
</Steps>

<Note>
  To use this dataslot in the [Sync workflow](https://docs.gocobalt.io/implementation/workflow/sync_using_proxy), you would need to change the action in Node 2 to `Get Contacts Of A particular List` and provide this dataslot in **Enter List ID** field.
</Note>

You can get this Config of your users after they perform selection by using the Config API or SDK Method.

<Info>
  Navigate [here](/implementation/integrate/end-user-config) to learn how you can manage Configs for your end users.
</Info>