This topic covers how to add selection steps to an analysis. Both filters and selection steps allow you to limit the data displayed in your analysis. Unlike filters that are applied before the analysis is aggregated, selection steps are applied after the analysis is aggregated. Selection steps only affect the members displayed, not the resulting aggregate values. For example, the outline total for the top level of a hierarchy is not affected if some members of the hierarchy are excluded from the selection. Selection steps are per column and cannot cross columns. While measure columns appear in the Selection Steps pane, you cannot create selection steps for them. Note that however, the grand totals and column totals are affected by selections. You can create selection steps for both attribute columns and hierarchical columns.