Hey bro! Maybe you are new to UE and honestly the Fab page for the plugin should have a step-by-step installation process to account for that. But here’s what you should do:
- Acquire the plugin on fab.
- Go to the Epic Games launcher, go to Unreal Engine > Library and scroll down the page until you reach the Fab Library section.
- In the Fab Library search for the plugin name: Online Material Library. (If it doesn’t show, update the Fab Library by clicking the small update icon right next to its name)
- When it comes up, click Install to Engine. It will download the plugin and then you can select the version you want to install it. For some reason I had to click that button twice. One to download it and another one to install it. But I don’t think this was the plugins fault.
- Now when you start the engine a small alert in the bottom right corner should appear notifying you that a new plugin is available. If not, it doesn’t matter.
- Now with the Engine opened, go to Edit > Plugins and search for the same plugin name there. Enable it and restart the engine.
- When the engine restarts, right there next to the Platforms button (Like shown in the prints of this post) there will be a new button so that you can access the Library.
Hope it helps! 