Suzs

Hi, we've not used Affinity for a while so a bit rusty. We use Affinity among other things to create text to be cut out of vinyl for t-shirt printing. We have to convert the text to an outline with no fill colour for the printer to accept it. In the past, I'm sure we have included simple logos provided by customers but now I can't find out how I would do that as I can't find a function to remove the colour and just show the logo as an outline. Can anyone help please?