How to control the order of axis which is based on a categorical variable?

[KubiK888]

I am doing a frequency bar chart with y-axis as frequency and x-axis as age group (such as 0-19, 20-29, ...). I want the axis arranged from youngest to oldest group, however, the default is going from highest frequency age group to lowest frequency age group, how can I rerrange the order of x-axis categories according to my preference?

[SASKiwi · Accepted solution]

Try a custom sort on age group - you just right click on age group properties in the data source and it should be listed.