This feels like a silly question, but I honestly can't figure out the answer to it!
If I have a legend on a layout, and it doesn't contain all of the layers from the map frame that it is linked to, is there any way of adding the layers back in? I've had this issue a few times, and have ended up creating a new legend as I can't find a way around it, but I'm sure I must be missing something basic!
Thanks in advance for any help.