The margins command calculates predicted probabilities for each covariate across groups (outcome). For example, if you estimate a multinomial model with 3 choices the sum of the predicted probabilities for each covariate will equal one across outcome groups. This is equivalent to running crosstabs with the row option. However, is there an equivalent in margins of running crosstabs with the column option? In other words, is there an option for margins that calculates predicted probabilities that sum to one for each covariate within, as opposed to across, groups.