Merge with the background query
Afternoon All,
I have a query about the menu option "Merge with the background" and what does it do:
I have some areas where I would like to change the background. An example is:

And would like to block out the RL. I have created a separate object that does this, see below:

I then heard about the function "Merge with the background", but when I use it the white space is being lost and it is going back to the original.

Am I doing something wrong or misinterpreted what this function does? The background itself is an image taken from a simulation and not part of the master slide.
Thinking off the top of my heard since I created the CBT I have resized it (slightly taller) and positioned the original image at the "Bottom Centre". Could it be positioning it wrong since when I try another object to merge I get (red line indicating where it should be):

Many thanks
Phil.
