Help with Tefal 61634 Steam Cuisine Cooker!

I have this 3-tiered T-Fal Infuser. It cooks rice and veggies, meat, fish. It looks the picture of the 61621 steamer, with one other tier. It's a series S02, the model number looks like 61634. I would love to use this, but I have no manual and have no idea how to use it. I've searched the internet for a manual, but to no avail. Does anybody know where I can find a manual for this or competitive model? My husband bought it years ago, upon which it sat in the closet for years. He died and I can't find the manual anywhere. Help with using this steamer would be greatly appreciated. It appears that you can steam many things at once, but the times of each item varies. I don't understand it.

Thank you for any assistance you can toss my way!