Magicians and mentalists can configure here their tricks at the precision of one second:
... make multiple phones ring with makering+ during 1 to 30 seconds. ... make two phones call each other with makecall sequentially or simultaneously. ... make one phone send an SMS with makesms+ without the second SMS sent 5 minutes later.
Do not change the parameters if you are not sure of the effect. Use the standard (Std) values in case of doubt.
Do not forget to save the configuration after having modified the parameters.