Voile panels & curtains

[Mollylove]

I have a Roman blind & curtains to dress my window but I'm near quite a busy road so I'd like to add a voile panel to draw in the day but not shut light out.
Problem is I don't know how to fit it as I already have a curtain pole.
Any idea?

[Mollylove]

Anyone?

[mineallmine]

You can get double curtain poles. I know they do them in ikea so I imagine they have them elsewhere too.