Oh thank you so much for the help, I really appreciate how much you have helped me!

If I want to have a sub menu, do I have to create new setpoint adjusters for those?

I dont really know how to explain this, but I will try.

If i have another menu page (page 2). And i have 3 timers there aswell( timer 4, 5 and 6). What do i need to do so i can adjust them?

For every timer i want to adjust (+ and -) do i need to create a separate setpoint adjuster?

Or how do i add them to the setpoint adjuster?

"If you now want to change a parameter, you need to select the appropriate message text.
When the message text is selected, press the ESC key for longer than 2s. Then, a black bar appears in an input / output field.
With cursor up / down you can choose between several fields.
If you select the field to change, press the OK button (at TDE > Enter).
The black bar turns now in a blinking box. With cursor up / down, you can now change the value at this position, with cursor left / right to switch the position.
When you are finished with the changes, press again the OK button and you will return to the black bar.
Now you can select with the cursor up / down to another field, or press ESC to quit the operation."

 So can  I only change the first parameter with F3 + and F4 -? The < arrow doesnt move when I click cursor key down, It stays on the top row. Maybe there is something wrong with my program I dont know.

It is not really a big deal, I can do it the way you showed me. But the cursor key down and up and F3 +, F4 - would have been easier.