This is the Csp formfield/checkbox template. It should be called in the following format:

{{Csp formfield/checkbox 
|name= (text) 
|required= (optional: "required")
|value= (text)
|allowedValues = (optional: "Checked value, unchecked value") e.g. "true,false". Defaults to checked value "Yes" and unchecked value empty


Related templates:

Template:Csp formfield/ask token
Template:Csp formfield/checkbox
Template:Csp formfield/date
Template:Csp formfield/datetime-local
Template:Csp formfield/number
Template:Csp formfield/select
Template:Csp formfield/text
Template:Csp formfield/textarea
Template:Csp formfield/token