In practice it looks like this: Let’s say a photography studio employee is out shopping for props for an upcoming photo shoot, and their card limits them to spending $100. When they get to the register they discover that the actual cost is closer to $110. That employee can shoot a request over to their manager asking for an additional $15, and Dash will send a push notification to that manager. The manager can approve the additional funds right from their phone, or from within Slack (a popular office communication platform).
We're trying to build a system where companies feel comfortable giving cards out to all of their employees and then adjust the limits upwards as they build trust internally. The ad-hoc requests features from this example might be best for new/temporary employees or large purchases. Over time I'd hope that most employees will actually have a monthly budget and thus a greater degree of autonomy.
Holy micromanager.