Just ask the lab to "push one stop" when you send it for development.
Otherwise, if you still want to develop it as normal, then you can either set the EV compensation to +1EV, or manually increase the exposure by 1 stop (eg. f/8 to f/5.6, or 1/250s to 1/125s). But then there is no reason for doing so, and it would be weird.
Also, note that your friendly ( or not so friendly ) neighbourhood lab may not understand what is 'push 1'. And then usually you'll be charged more. Looking at the RGB pricelist that I'm holding now, it says 50% more, which means $3.70 + $1.85 for negative film.