Can create form in landscape? in addition to the portrait

Yes, you would be able to make the Form to appear in a landscape mode by increasing the Form width.

You might also need to inject CSS code to increase it: 

https://www.jotform.com/help/117-How-to-Inject-Custom-CSS-Codes

Also, please take a look at the guide below that can help you in positioning the fields.

https://www.jotform.com/help/90-Form-field-positioning

Hope this information helps! Please get back to us if you need any further assistance.

Thanks.