Advanced users may choose from any of the dimensions listed in the drop-down lists to add to custom reports. If you are not an advanced user, choose from the list of Standard Dimensions to specify a primary and optional secondary dimension.
Choose a primary dimension, then select the check box to Exclude activity without dimension data rather than report all dimensions. In that case, if no data exists, the word “none” appears in your report.
Choose a secondary dimension in the drop-down list, then select the check box to Exclude activity without dimension data.
Click Next to begin the task of adding measures.