Native ECC validations in MDG?

Hi,

We know that ECC 6.0 has existing validations and MDG can use them.

Can anyone direct me to a link or a tutorial on how to use these validations (I am NOT asking for brf+).

I need to put a lot of validations and I want to use ECC 6.0 native validations in the first place before moving to brf+...

A detailed answer or a similar link would be awarded points.

Thanks