Secondly IGNORE the line that says "Leave this value at 0 until you get into the server". I'm not sure why the authors put that in, but we've (well I've) found that the simplest way is to enable everything in the config file (I'll post the lines in a second). It caused problems trying to spawn the bots after joining the server, but maybe that was just me being dumb. If it works, before you join you'll be able to see if the bots have spawned by the player #'s in the server browser.
Thirdly I was on your server earlier today and you have Punkbuster enabled atm, bots won't spawn if Punkbuster is enabled, no matter how hard you try or how nicely you speak to them . So in the line that you start your server with you'll need to add this at the start (position is unimportant I think it just has to be in the shortcut that starts your server) I understand it's possible to add that to the (in your case) ow2.cfg file on a separate line - but that's been problematic for us in the past so I'd suggest just adding it to the startup shortcut.
That'll disable punkbuster and allow the bots to spawn. It's the same for any server that utilises bots, PB has to be disabled.+set sv_punkbuster 0
If the server is started via the nfo control panel - I have no experience with that because we run our servers off our own NFO VDS. But there should be an option in the control panel somewhere to disable Punkbuster. If there isn't then I'm sure tech support won't mind helping you with that.
Now the commands in the config file (remember it's the "configs/server/others.cfg" file:
You obviously only want "10" for the # of bots. And if your shortcut isn't too long you could even add the second commad "set scr_tes" blah blah - to the shortcut if you wanted.// Enables the ability to use test bots for testing
// 0 = Disabled (default), 1 = Enabled
set scr_allow_testclients "1"
// Leave this value at 0 until you enter the server.
// Make sure to uncomment it if you plan on using it.
// Whatever value is then entered will spawn that many bots.
// 0 = default
set scr_testclients "20"
The bots will only spawn for one round - so as the map changes they'll disappear, but that's a good thing because as I said they're not pezbots and you'll soon get very tired of them.
Hope that helps.