Collectible Card Game Headquarters

Hi everyone, new user to MTG Forge here. I've searched a few times for advice on getting partner commanders to work on these forums, but no luck implementing any of those techniques on my end.

Personally, I'm attempting to deckbuild with Sidar Kondo and Tana, The Bloodsower. I've tried CTRL+Right clicking on both of them, but no luck. I can still only select one or the other for my commander.

Has anyone experienced this issue and/or found a fix? Any advice is appreciated!

You need to CTRL+Left click on the commanders to select them both. Then right click on one of them and select "Set 2 cards as commander."