Ok thanks
Time controls: Can someone explain 5/10, 5/5, 3/2, 2/1?

What does 1|15D mean? I mean, what does the "D" part stand for?
D usually means delay. In that case it would be the clock doesn't start for 15 seconds.

how can i set 10 + 5 in manual clock
It would be hard to do so. I suggest buying a chess clock.

The time controls with two divided numbers are time controls with increment. The first number indicates how many minutes you start with, and the second indicates how many seconds are added to your clock after playing a move.

What does 1|15D mean? I mean, what does the "D" part stand for?
The "D" means "delay". The clock will not begin counting down for the number of seconds shown by the second number after playing a move. This is not quite as powerful as increment, since the clock gains no time, and any time not spent thinking during the delay is wasted.
I would ask that as a new topic so you can get your question answered. It will get lost here, most likely.