Hello !
If you want to add a picture as a layer for composing in FlexColor and in thetered mode, hold down the alt key and click on the second squared button in he bottom of the main window

You can browse all your hard drive for choosing your layer picture
Then you can resize it in your FlexColor window and choos the transparency with the slider.
One more thing, if you want to rotate this layer picture in your FlexColor window, you must use a .png picture !
Then, with alt key, you can drag the right bottom corner to make a rotation around the left bottom corner...
Pretty easy ?
Try it !

I don't find anything for overlay in Phocus......
Last thing, please don't be afraid with my poor english, my mother language is « La langue de Molière » !
Olivier
<);o)