I'm trying to combine uv maps of multiple objects into one texture coordinate so I can have only one texture map when baking. For this purpose, I'm using the Texture Atlas Addon. I select my objects and clicked "StartManualUnwrap" button, and I see the screen below.
Here, I want to the uv map of each mesh and manipulate it (scale and translate). However, I don't know how I can select the mesh of only one object in this mode. For example, in the picture above, I want to make only one mesh orange. All selected objects seem to be combined in this mode, so I can't manipulate them separately.
How do I select vertices of the same mesh for manipulation?
Thanks in advance.