Is it possible to fix the position of a layout boxed its content? I am finding that the content on a page will move around even when I am not on it. I often find the menu has moved to the bottom of the page and it takes an age to get everything back where it should be.
Welcome onboard @MrsM 
Yes it is possible to lock down elements by right clicking on the element and then selecting Lock.
It sounds like you are using Layout Blocks?
The strange thing is that I just tested it and after locking the Layout Block it still moves around so I’m not sure what is going on there? @duncan?
Yes, I tried that too but it didn’t seem to have any effect. I am wondering if you can only lock text blocks or images.