One thing I find useful is to list your party’s Perception modifiers, use the formula above for a random d20 result for each PC, then add them together (for example, =B2+C2). Then when they walk into a room, hit F9 for an instant whole-party secret Perception roll.
This is basically what I do as well.
One thing I find useful is to list your party’s Perception modifiers, use the formula above for a random d20 result for each PC, then add them together (for example, =B2+C2). Then when they walk into a room, hit F9 for an instant whole-party secret Perception roll.