There’s no official way to have multiple lineups on a single server currently, to my knowledge. I think there is a feature request for it, I’ll try to track down the link and add it here.
Or, you could request that those stations be added to your existing lineup. There’s a form you can fill out at this link to report EPG inaccuracies. I’ve seen some requests in it to add stations to a market as well:
Edit to add, this is the feature request I was thinking of; however, I’m not sure it applies in your situation. It may be better to request those stations be added to your market.
