My platform is a Macbook Air, running MacOS Catalina v 10.15.3. I am using Basecamp v 4.8.8. And recently I bought a Garmin Topo U.S. 100K full coverage March 2016 on a SD card. I can get it to work on basecamp, but each time I want to use it I have to load the SD in a docking station then attach it to the Macbook Air. My problem is, I want to install the topo software into the Basecamp software so I don’t have to load the topo software each time I want to use. Thanks Al Cassell