Overview
Multi select fields allow users to select one or more entryfrom a list of pre-set choices, instead of typing them. Zoho Creator supports the following types of multi-select fields:
- Check box: Check box fields allow the user to choose one or more options from a list of choices displayed. They are easier to read and require fewer interactions/clicks to use. Sure, they take up more space, but in Forms where maximizing space is not an issue, but visibility of available options is, then check boxes would be a better UI choice for selecting multiple options.
- Multi select: A multi select list provides the user with many choices in a limited space. It allows the user to choose one or more than one option from the list of choices. A multi-select list takes two or more clicks (to open the list, scroll, and select) to make the selections.
Sreen-shot of a sample form with checkbox and multiselect fields

Also refer the topic, conditional drop-downs to populate list values dynamically
Configuring a checkbox field type
- Drag-n-drop the Checkbox field type to the editor area.
- The Adding 'Dropdown' screen is displayed as shown below. In the Label Name textbox, enter the Field Label name that will be displayed in the form.
- Click on Options and select the field configurations.
- By default the check box will be arranged as one columnar layouts. To arrange them in two or three columns, select the required option from the "Field Layout" list box.
- If you want the drop-down choices to be displayed in alphabetical order, select the checkbox "Show choices in alphabetical order". Refer the link Field Configurations to learn more about each configuration.

- Click Done to add the field with the specified configurations.
- To edit the field configurations or to delete the field or to add field action scripts, move mouse over the field and click on the Edit this field option, as shown below.

- When you Access the application, the drop-down field will be displayed in your form with the specified choices. Users can open the list and make the required selection.
Configuring a multiselect field type
- Drag-n-drop the multiselect field type to the editor area.
- The Adding 'Radio' screen is displayed as shown below.
- In the Label Name textbox, enter the Field Label name that will be displayed in the form.
- In the Enter Choices textarea, enter the choices to be listed for this field, one per line.
- Click on Options and select the field configurations. If the want the drop-down choices to be displayed in alphabetical order, select the checkbox "Show choices in alphabetical order". Refer the link Field Configurations to learn more about each configuration.

- Click Done to add the field with the specified configurations.
- To edit the field configurations or to delete the field or to add field action scripts, move mouse over the field and click on the Edit this field option, as shown below.

- When you Access the application, the radio button field will be displayed in your form with the specified choices. Users can select the relevant checkboxes.