# Brooklyn theme
Before Infinite Options starts working on your store, you will need to install the app onto your current theme.
Follow the step-by-step instructions below on how to install Infinite Options for your Brooklyn theme.
1\. Starting from your Shopify dashboard, click on **Online Store**, and then click on **Themes**.
2\. Click the **Actions** button, then select **Edit code**.
3\. Use the search bar located in the top left of the code editor to search for your **product-template.liquid** file.\
\
4\. In this file, do a search using the keyboard shortcuts (ctrl F or ⌘ F) for the following text.
```liquid
{% form 'product'
```
5\. Within the {% form and {% endform %} tags, locate the **quantity** section that starts with:
**{% if section.settings.quantity\_enabled %}**
6\. Copy the following code snippet.
```html
```
7\. Paste the code snippet on a new line right above the quantity section that you found in step 5.
8\. Save changes.
9\. You can now start creating options for your products. Follow the instructions in [this article](/infinite-options/welcome/create-custom-options.md) to get started.
***
**Creating an option that needs an additional cost for customization?**
Our Product Bundles feature allows you to attach an add-on product to the option selection so you can add an extra cost to your main product. Create new products like a $5.00 gift wrapping and bundle it to your option. When selected, both products will be added to cart.
[Click here to learn more about the native bundling feature.](/infinite-options/increase-the-cost-of-an-option/native-bundling.md)
**Looking to add more features? Click on the name of the feature to learn more.**
[Date picker](/infinite-options/inputs-and-field-settings/add-a-date-picker-to-your-store.md): A calendar option that lets your customers easily select a date.
[Swatches](broken://pages/SH8Dz6zJd5rhXWmNixS6): Attach images or colors to options.
[Conditional Logic](/infinite-options/conditional-logic.md): Display or hide options based on their previous option selections.
[Use Conditional Logic with Swatches](/infinite-options/conditional-logic/swatches.md): Display swatches based on a previous option selection and vice versa.
[Creating a Variety Pack:](/infinite-options/popular-setups/mix-and-match-variety-pack-or-gift-pack-example.md) Set up multiple drop-down menus so your customers can select different scents or flavors for a variety pack product.
---
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```
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```
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