How do I use stopwatch on my GAP FAL 11 watch

It sounds like there may be an issue with the movement of the second hand on your stopwatch. There are a few possible causes for this problem. One possibility is that the battery in your stopwatch may be running low and needs to be replaced. Another possibility is that there may be a problem with the mechanical movement of the stopwatch. This could be due to a loose or broken part, or it could be a result of wear and tear over time.
To troubleshoot the issue, you could try replacing the battery in the stopwatch to see if that resolves the problem. If the problem persists, you may need to have the stopwatch serviced by a professional watch repair technician. They will be able to diagnose the problem and repair or replace any faulty parts.

We need to knoe make, model, all the writings on case back, please.

mcdevito75 here, Try re-setting the entire watch, re-set everything, hour, minute, day, date etc.

Push the upper button once. The stopwatch hand will freeze. Push the bottom button. Stopwatch hand should move to ZERO position. Rate me, please.

The procedure for the Classima Chronograph watch is different. You need to pull the dial all the way out, press on both buttons and hold for 5 sec, until the seconds dial makes a full cirlce (signalling that the chronograph is now ready for manual reset, then press the button on 2 o'clock until the seconds dial reaches the 12 o'clock position, then press button at 4 o'clock, to transfer control to the 1/10 dial, press button at 2 o'clock again a number of times until it resets to 0, then press 2 o'clock dial again to transfer control to the little hours dial, and press 4 o'clock button number of times until you reset this one to 0 too. Now just push back the dial crown to original position to close the operation. Viola

where can I get the instruction manual for the Robic sc707 stopwatch?

Your watch has quartz movement and stopwatch adjustment by one step (one full second) only. That means you will not be able to adjust stopwatch hand by using pushers on your watch as each push of the pusher will advance stopwatch hand for the full second, not the fifth or the tenth of the second, and the hand will stay slightly off anyway.
This happenened because the IC (integrated circuit) in your watch miscalculated the teeth count on chronograph wheel and stopped one or two teeth past or under the zero point. It doesn't happen very often, but in your case it did and the only solution is to find your nearest watch repair shop and ask for resetting stopwatch hand to zero.
This procedure needs partial disassembling of the watch and quite a great skill as the stopwatch hand must be removed and then refitted with great accuracy. All this needs to be done by very specialized tools as well.
I think this is the only solution of your problem unless you can live with that and just leave it as it is.
Do not forget to rate, please.

For setting Time & Date...
1. Push "MODE" button three times (change Mode to TimeSet)
Time -> StopWatch -> AlarmTimeSet -> TimeSet -> Time ->...
2. Flashing Second Number Digits
3. Push "RESET" to select...
Second -> Minute -> Hour(12hr<->24hr) ->...
Date -> Month -> Day of Week -> Second -> ....(repeat)
4. Use "START" to set each item...

For setting Alarm ON/OFF
1. Push "RESET" button then Push "START" same time...
Alarm ON -> Alarm OFF -> ... (repeat)

Pull the crown to first position (where you set the date) then adjust the dials with buttons.

uhrmacher