The process of installing a template is extremely simple. You simply need to drag it into the Templates folder of your Unreal Engine version.
Blueprint versions of templates aren’t necessarily bound to a specific Unreal Engine version as long as the nodes are compatible and you should be able to use all of my templates with UE5.1 and above!
The default location for this is different for windows and mac.
Windows:
C:\Program Files\Epic Games\UE_[version]\Templates
Mac:
/Users/Shared/Epic Games/UE_[version]/Templates
Once you’ve located this folder simply need to drag the template archive you downloaded in here.
Here you need to make sure to unzip the archive and turn it into a regular folder, otherwise it won’t be recognized.
To do this, right click the archive and ‘Extract All’ to use the default unzip method that comes with your operating system, but you could also use winrar or 7zip.
Now you can delete the zip archive and only keep the folder.
After doing that and opening up the new project browser of your Unreal Engine version, the template should then show up.
To add the template to multiple versions of unreal engine, just follow the previous steps and copy-paste it into the Template folder of all of your compatible Unreal Engine versions.