You can access the Buckets sub-module by clicking Plan Setup > Buckets from the LHS menu. Upon clicking this link, the Buckets page is displayed as depicted in the following figure:
The Buckets page displays the existing list with details such as Dimension Desc1, Dimension key1, Dimension Key2, Bucket Value, Bucket Projected Value, Frequency, and Bucket Desc.
You can click the 
button to view the additional fields such as Dimension Desc2, Calc Year, Calc Period Num, Modified During Payee, Bucket Type, Bucket Data Type, Modified During Calc, Row Key, Created At, and Modified At.