[Applying gradients as per Lightroom]

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[Applying gradients as per Lightroom]

Good afternoon all, 

 

First time poster, long time Affinity struggler. 

 

I am trying to apply a graduated filer to an image as per this video (around the 32 min mark). 

 

I know I can create a new fill layer and apply a gradient, but this only seems to be applicable to a blend mode. In the video above the user is able to apply a graduated filter to affect exposure and importantly colour - this is really bugging me as I am trying to create more creative edits. 

I am aware this is a Lightroom tutorial, but I have noticed there is a lot of crossover between the two editing programs and so even Adobe tutorials can be helpful. Is there no way to do what is demonstrated in the tutorial in Affinity? Do I need to be in a different persona perhaps? I am most familiar with the Photo persona - am I in the wrong place? 

Many thanks!