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

# Sample 4. Step 1: Create the project and assemble reference documents

> Start the Sample 4 multi-page invoice tutorial: create a FlexiLayout Studio project, assemble reference documents, and set FlexiLayout properties.

Prepare the Sample 4 multi-page invoice project by creating the project, adding the test images, assembling the pages into reference documents, and setting the FlexiLayout properties.

A reference assembly shows how the pages are separated into documents, so you can compare the assembled documents against the correct result. You can create it manually or automatically when you add the images to the batch. For more information, see [Reference document assembly](/flexi-capture/fls/settings/etalon-assembling).

<Steps>
  <Step title="Create the project">
    Run ABBYY FlexiLayout Studio and create a new project (**File → New Project**). Name the project **Invoices** and select the **ABBYY FlexiLayout Project Files (\*.fsp)** project type.
  </Step>

  <Step title="Add the images to the batch">
    Add the test images to the batch. For more information, see Sample 1, [Step 2](/flexi-capture/fls/tutorial/step2).

    <Note>
      The test images for Sample 4 are located in `%public%\ABBYY\FlexiCapture\12.0\Samples\FLS\English\Invoice\InvoicesBatch\<page number>\Images\bwPage.frdat`.
    </Note>
  </Step>

  <Step title="Assemble the pages into reference documents">
    First, analyze the pages to see which pages go into which document and in what order. In the **Batch** window, the pages that belong to the same document must strictly follow one another (page 1, page 2, page 3, and so on).

    <Note>
      If the pages were added to a batch in a random order and cannot be assembled into documents, renumber them. To renumber the pages, drag and drop each page into the location you want in the **Batch** window. FlexiLayout Studio automatically renumbers the rearranged pages.
    </Note>

    Then assemble each document:

    1. In the **Batch** window, select the pages that belong to the same document.
    2. Right-click the selection and select **Assemble to Reference Documents...**.
    3. In the **Assemble to Reference Documents** dialog box, select **One document**. FlexiLayout Studio groups all the selected pages into one document.
    4. Select **First page of document matches Header**. This option means that the **Header** element must be matched with the first page of the document.
    5. Select **Last page of document matches Footer**. This option means that the **Footer** element must be matched with the last page of the document.
    6. Click **OK**. The reference layout appears in **Reference layout** mode: the beginning and end of the document are marked with green markers.

    <Note>
      If the pages were assembled into a document incorrectly, you can cancel the operation by selecting **Disassemble Reference Documents**.
    </Note>
  </Step>

  <Step title="Specify the FlexiLayout properties">
    Specify the following properties for your FlexiLayout:

    * **Name**: **Invoice**.
    * **Text type**: Select the **Typographic** and **Matrix printer** text types.
    * **Text languages**: Select **English**, because the sample documents are in English.
    * **Mode**: Select **Fast** recognition mode.
    * **Minimum number of pages**: **1**, because the sample documents can include a minimum of one page.
    * **Maximum number of pages**: **3**, because the sample documents can include a maximum of three pages.

    <Frame>
      <img src="https://mintcdn.com/abbyy/8aWHPAJyzWmTqglX/images/flexi-capture/fls/tutorial4_1.png?fit=max&auto=format&n=8aWHPAJyzWmTqglX&q=85&s=748f992fe5dbb336abbafe1def599b72" alt="Screenshot of the FlexiLayout properties dialog box in ABBYY FlexiLayout Studio showing the pre-recognition settings for the Invoice FlexiLayout, including text type, languages, recognition mode, and the minimum and maximum number of pages." width="723" height="496" data-path="images/flexi-capture/fls/tutorial4_1.png" />
    </Frame>

    For more information about selecting pre-recognition parameters, see Sample 1, [Step 3](/flexi-capture/fls/tutorial/step3).
  </Step>
</Steps>