EA to start trading only on new bar

[ss]

Hello
kindly let me know as how to make the following:

1_ EA (once loaded) should only start trading on the 'next new bar'
2_ that is even if all conditions for buy/sell are being met the EA should not start trading up untill the
formation of a new bar
3_ this condition should only be for the first time that the EA is loaded - not there after

thanks