The installation of the GP Transaction Search window is a nice simple one.
First off, download the addin from the Precopio Services website.
The downloaded file is a zip which contains the four versions currently available:
I am installing the Microsoft Dynamics GP 2018 version, so have opened the 2018 folder.
Copy the contents of the folder to the Dynamics GP addins folder which is a subfolder of the installation one (by default this is C:/Program Files (x86)/Microsoft Dynamics/GP2018/).
Depending on your security settings, you may need to Unblock the dlls. To check if this is necessary, right click each one in turn and click on Properties. If there is a checkbox called ,em>Unblock, mark this and click OK to save changes.