If using newest version of Rainlendar...right click on Rainlendar, choose ' options '
Tick off " on top ' in the positions in lower left corner..hit ok.
Using old rainlendar...Right click on the Rainlendar, click on 'config ' click on layout tab and tick off " on top ' click ' ok '
This will always make your Rainy show when you open other windows...if thats what you were asking.