If you would like only a specific lot to allow Sims from other Worlds, then you can use the International Hub lot trait. When this lot trait is applied, all Sims will ignore all the mod's filters and your personal settings. Sims will spawn there as if the mod is not installed. To apply the lot trait, open Build Mode and open the Traits Panel in the top left corner like normal. International Hub is listed in the Lot Challenges menu so that it does not take up a lot trait slot.