The ability to call multiple people at once from different numbers without having to pick up each person individually. It's super easy for my staff to use as it allows us to keep track of our calls easily. Sometimes if we have too many meetings we can't get through them quickly enough because there are so many options to choose from! I love that you can make outbound calls or conference rooms available instantly which saves me time when scheduling appointments and makes it much easier than managing voicemails. If your office has more than one extension, this app will be great. We've used other similar apps but they don't allow you to manage several extensions like talkchief does. This helps cut down on mistakes by making sure everyone knows what their next meeting is before walking into it.