> For the complete documentation index, see [llms.txt](https://docs.simplio3d.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.simplio3d.com/learning-the-app/products/create-options/checkbox.md). # Checkbox Each check box represents a variant, and the distinct feature of this type of option set is the possibility to select more than one variant from the same option set. To add an option set checkbox type, you need to click on the "Create Options" tab and at the top right of the screen, select the option set 'Checkbox' type found in the drop-down button.

After selecting the checkbox, click the "**Add block**" button next to the drop-down to add it to the block list. Before it is added to the block list, you must define the set of options for the check box.

The app will prompt you to assign a **title** and add the first **variant** to the set of checkbox options, also you can hide or show the title. After clicking "Add variant", a pop-up window will appear.

Define 'Variant' within the Checkbox option set

Each variant in an option set allows selection of a 3D model, 3D part(s) and material. Please note that they are not required to be selected (are not mandatory in order to create a variant). You can create these checkboxes without an effect on the 3D object, so it is not necessary to assign it a 3d model or material, only if needed. In the below example we will skip this by directly clicking the 'Save' button.

First variant added within the Checkbox option set

Now click on “Save” again and you will find the newly added option set at the bottom of the block list.

Your configurator is ready for a preview. You can repeat the process and add as many checkbox variants as needed for your configurator. You can add [restrictions](/learning-the-app/products/create-options/restrictions.md) and [prices](/learning-the-app/products/pricing.md) and it will be detailed in the relevant chapter of this document.