I watched the Affinity Photo tutorial for adding a graduated ND filter effect. The first process is to add a curves adjustment layer, change the curve and then add a gradient.
That works fine, but assuming I've clicked away from that layer, how to I get back to be able reselect the gradient if I want to change it?
I've tried simply selecting the curves layer and also re-selecting the gradient tool, but the handles for the gradient I applied are never shown again.