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How the Alert Center Works
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The Alert Center is located on the top-most menu, to the left of your name.
Clicking the Alert Center brings up a drop down showing the categories listed above. Clicking on any of these categories will drill down into the specific category for more details.
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Whenever a new Prospect is added to Hopper the Alert Center icon turns red as long as the count of newly added Prospects is more than 0. When any user goes to Hopper it turns gray again as the Hopper is customer-level setting, not user-level setting.