To move characters around place cursor over them, press spacebar, and then you can draw commands for them. Then you have to press escape to control the cursor again, and hold the H for around 1 second to execute commands. During that time you can't give any new orders, but you can hold H again to go back to giving orders.
Instructions on the right panel should be helpful to keep with the game flow.
Thanks for comment and trying it out, and I hope now you will be able to play!