Armis is brain-game fun.
After team color selection the system will highlight the set-up zone and situate your Flag.
Click 'Set-up' button, and click 'random legal' close set-up overlay, arrange pieces further if you wish, then click the overlay to confirm final set-up.
During your turn click on a player piece to highlight the legal moves for that particular piece, also refer to the onscreen guide to learn the game as you play.
See Player's Handbook (at ArmisGame.com), and youtube videos for Armis strategies, tactics and tricks.