Users Manual For Defy Gemini Eye Level Oven?

Hello, I'm looking for a users instruction manual on how to use a very old double door eye-level oven. I do not know which model it is, unfortunately. I jst know that its a Black Gemini Delux Eye-Level Oven. Above the top oven on the far left it looks like 3 clock timers, then next to them on the right 6 orange-coloured switches, and then it has 5 turning knobs for different functions. I need to know how to use them properly. No manual was left for us to use it and it seems to work well. Thk u for anyone who can help us with a manual or a copy of one, or even someone who knows how it all functions and can send me all the info I need to use it, it would be so appreciated.