This property is useful if you want the user to fill the block from a pre-defined list of data items. The data can be in the form of Radio buttons, Dropdown, Checkboxes and Date Picker.
﻿How to setup input options?﻿
Select any product template and click on the Action button and select Manage Blocks from the drop-down. 
From the Manage Blocks tab, click on the ‘Manage Properties’ link of any block.
In the Manage Properties screen, click on the ‘Add’ button from the top-right corner to add a property.
In the property drop-down, select ‘Input Options’.
Select the input type.
Enter the input options for the input type Drop Down, Radio Button, and CheckBox.
Enter the input separator i.e. a symbol that should be used to separate entries when there are multiple inputs, like in the case of Check Box.
﻿What are the input types available?﻿
There are six input types available, namely – Text box, Text Area, Drop Down, Radio Button, CheckBox, and Date Picker.
﻿How to define Input Options?﻿
Select the input type and enter the input content. Enter the content in the field accordingly. Use new line (or press 'Enter' key) to separate entries in case of Drop Down, Radio Button and CheckBox.

If the input type is Date Picker, use a combination of d, dd, D, DD, m, mm, M, MM, yy, yyyy to specify a date format.
﻿What is Input separator?﻿
For the input type checkbox, specify an input separator symbol to help in separating checkbox entries