What is the best distance between a desk and credenza in an office which has an office chair in-between them?

Maximize the efficiency of available space: Allow 3 ½ to 4 feet behind your desk and 3 ½ to 4 feet between a desk and credenza. Behind that, 3 feet in front of desk if allocating space for guest seating. Allow 3 feet or more on one side of the desk for desk accessibility.

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