Installing the addon:

1. Edit > Preferences

2. Install

3. Find the downloaded addon: real_damage_1.0.2.zip. Install Add-on

4. Need to wait until the addon is installed. Then click on the check mark

5. The addon will appear in the sidebar

Choose your materials:

I'm still working on the add-on.

Therefore, some functions do not work correctly.

You need to select your materials through this menu: