How to bake one texture for one mesh with multiple textures blender 2.8 I'm trying to perform material merging into one texture in accordance with the solutions:

Baking two textures into one
and
Baking multiple materials into one texture

But due to differences in Blender 2.8 interface I can't find 'bake' option in Render menu. And 'Texture atlas' wasn't found.

Could you kindly provide some steps to perform this task? 

Thanks,
...I feel that it should be simple but hours spent and I was not lucky in this...
Due to changes in Blender 2.80, the Texture Atlas add-on might have become obsolete.

In Blender 2.7x it was only possible to edit one object at a time, thus you were only able to see one UV layout at a time. 
In Blender 2.80 it is possible to edit two or more objects at the same time. 

Start with UV-unwrapping the individual objects, just don't move or place the UV islands to minimize texture space.



When both objects are unwrapped, select both objects, go into edit mode, move your mouse to the UV Editor, select everything and go to "UV - Pack Islands". 



Now every UV island from every object should have its own UV Space and also roughly the same texel density. 



You can now either modify the UV layouts further (optimizing texture space, sorting UVs, etc.) or you can continue to bake your materials. 

As for now (Blender 2.80 Beta), baking textures only works in Cycles. Go to "Properties - Render - Render Engine" and switch to Cycles.