Gradient Mask On a Layer?

[Heavy Doody]

First time post.

I'd like to draw a b/w gradient mask on a layer to have it fade to transparent, gradually revealing the layer below.

I Mainly use Luminar and ON1 for compositing. In those apps I select the layer, add a gradient mask, then start dragging.

What I've tried:

1. Open image.

2. Place second image.

3. Add layer mask to layer 2 (second "image").

That's where I get stuck. I simply can't find the gradient tool. I've read some older posts and think I know where it's supposed to be, but I'm not seeing it. Screenshot attached.

Thanks.

[DM1]

Just below the paint tin on the left. Called fill tool. You will need to tap one of the nodes and use opacity slider in colour studio to reduce opacity to zero.

[Heavy Doody]

Perfect. Thanks!