Welcome to the Bunnings Workshop community. Thank you so much for joining us and sharing your question about how to put up a bistro blind.
One way to do it is to attach two vertical hanging pieces from the frame of your roof and attach a horizontal piece to mount the bistro blind. The height of the horizontal piece depends on how tall the bistro blind is. I've placed a picture below for you to have a look at. Please tell me if this will work for you.