Update the guidance on when to use the checkboxes component

src/components/checkboxes/index.md

@@ -15,14 +15,16 @@ Let users select one or more options by using the checkboxes component.
 
 ## When to use this component
 
-Use the checkboxes component when you need to help users:
-
-- select multiple options from a list
-- toggle a single option on or off
+Use the checkboxes component when you need to help users select multiple options from a list.
 
 ## When not to use this component
 
-Do not use the checkboxes component if users can only choose one option from a selection. In this case, use the [radios component](/components/radios/).
+Do not use the checkboxes component if:
+
+- users can only choose one option from a selection, as checkboxes allow users to select multiple options
+- you want users to toggle between two possible states, for example, 'on' or 'off', as single checkboxes can be missed by users when you might want a user to engage with a two option question
+
+In these cases, use the [radios component](/components/radios/).
 
 ## How it works