Designer: Vector mask layer. Lock Children?

[bezster]

I can’t find a way to move an image with in its vector mask In Affinity Designer. (Naturally, I can easily move the mask group as a whole —the parent image and its mask. And I can move the mask independently of the parent image. )

Mike Rankin—an extraordinarily good presenter!—has an excellent Affinity Publisher tutorial series on LinkedIn Learning. It includes a short video topic (1.5 minutes) about working with Vector Masks in Publisher which shows a Lock Children solution in Publisher (BTW, I see the same option in Affinity Photo, official video below).

Unfortunately Lock Children appears to be unavailable in Designer's Context Toolbar, regardless of the layer selected.

At 0:40 seconds in Rankin’s Publisher video he shows how to

• a) move and scale the Parent object and the vector mask as a group
• b) move (or manipulate) the Mask only (i.e. reveal different portions of the Parent image)
• c) move the Parent image within the mask—to accomplish this, choose the image in the layer panel and enable Lock Children in the Context Toolbar. (Explained at 0:59 in Rankin's video).

Note that Affinity Photo has option c) ... as illustrated in Affinity’s tutorial on Lock Children:

As mentioned at the outset options a) and b) are easily accomplished in Affinity Designer and work as described in the Rankin's Publisher video tutorial.

And Lock Children (option c) seems like a perfect solution, unfortunately I can’t find Lock Children in Designer, nor can I find an alternate solution.

Is there currently another way?

Hoping I'm just overlooking something obvious!

bezster

P.S. I also like that in Publisher layers have a contextual menu containing Mask to Below (0:24) in the Rankin’s video. Makes masking a little more discoverable!

Edited April 3, 2020 by bezster

[G13RL]

[Luukv8x]

Hey, I also didn't see it at first. It said "select new object" in the top right where the "lock children" was supposed to be. 

 In my case I was still in "draw rectangle" mode, not in "move mode". When I switched to move mode (V) I could tick the "lock children" box :)