How to create an answer key that can be hidden

[surgenator]

I have created a 100+ page document in Affinity Publisher that consists of worksheets for students. I want to create solutions for these by actually filling out the worksheets. I can think of two ways to accomplish this.

1. Duplicate the file and add solutions. The disadvantage to this approach is that future changes have to occur to two different document so they stay in sync.
2. Create a layer on every page where the solution is included. Then disable the layer when I don't want solutions to show up. This is probably better than the previous approach, but it still involves jumping to 50+ spreads to hide or unhide layers. 

Is there a smarter way to globally hide or reveal the solutions?

 

[v_kyr]

Maybe using LINKS (aka anchor points), in order to jump then via a click to the end of the document to an answers list, might be another way here.

[DigiBee]

Maybe using a paragrapstyle orso on the the solutions. Then you could just give the font the same color as the paper bevor handing out.