Keep their ad up in their primary area while posting visiting ads. A lady may also elect to use a "base ad" on Eros in lieu of a visiting ad in areas she's visiting because a visiting ad only runs 2 weeks, whereas a base ad runs 4 weeks. For some ladies whose market tends to schedule with her the same day, or a few days or even a week in advance, a 2 week visiting ad is more than adequate. Some ladies have a market that tends to book weeks in advance. In these cases a longer ad is necessary, and it's far more likely that you're going to see overlapping ads.