Frequency separation on Photo Paint

Hi everyone.

It is well known that frequency spearation is a technique to retouching skin in Portaits. There are a lot of PhotoShop tutorials about it.

One layer with gaussian blur and one above with linear light... but what would be the equivalent of "Apply Image" (used in Photoshop) in PhotoPaint, and what values should I use? (Preferably on the 2017 version)

For those who do not know what frecueny separation is