Sloeber - How/Where to add my own (bread)board

I do like using the Eclipse interface. And in the Sloeber, Windows | Preference | Platforms and Boards, I can add & remove a selection of boards.
However, I would like to select/deselect my own ATmega328 on a breadboard (to avoid having to edit the avrdude.conf).
Can this be done using the above preferences or do I need to hack it into a boards.txt file?

Regards, Martin

If you have a json file you can simply add it.
If you have a boards.txt somewhere you can add it.
Simply read the doc/watch the video's to see how.
http:\sloeber.io
youtube channel