Rotation and Revolution in the Goldilocks Zone

We have a question here at how many other planets are in the system. Are any of them also in the Goldilocks zone? This is not necessarily a important question that we need to answer now. Other planets do not affect the primary planet as much, right? So like we can change our minds about this later or we can put a pin in this one and come back to it. But we can probably presume that there's a collection handful of other planets in the solar system - unless they become plot relevant later. Unless either of you have like strong feelings about planets.