Install:
Copy .dll and .addin to:
C:\ProgramData\Autodesk\Revit\Addins\2018
C:\ProgramData\Autodesk\Revit\Addins\2019
C:\ProgramData\Autodesk\Revit\Addins\2020
C:\ProgramData\Autodesk\Revit\Addins\2021
C:\ProgramData\Autodesk\Revit\Addins\2022
C:\ProgramData\Autodesk\Revit\Addins\2023
C:\ProgramData\Autodesk\Revit\Addins\2024
C:\ProgramData\Autodesk\Revit\Addins\2025
Unblock files in the file properties.