Resources are licensed for individual use. Each resource you purchase gives you one license to use that material for personal and educational purposes. This means you (or the person that you purchased it for) can use the resource for your own purposes and with your students, but your license doesn’t cover use by another friend or colleague.
If you want to share a resource for others to use, what you can do is buy additional licenses on my TpT store for 50% off.
If you know that you’ll need more than one license when you’re purchasing, use the “Buy licenses to share” button from the product page to choose the number of licenses to add to your cart. You can also adjust the license amount from your cart before you check out.
If you have any other questions about licensing for multiple users or building use, just ask!