The crosstab report will display up to 12 limits but to display multiple regulatory limits in a crosstab or other report that supports them, you must first setup a regulatory limit group and then add the limits you require to this group. When creating groups, we recommend naming your group in a way you can identify it as a group such as  using an “_” (underscore character) in front of the name to differentiate a single limit from a group.

Additionally, you must have checked the Display Reg Limits check box shown below. 

For more information see the FAQ on Why are my regulatory limits not showing up in reports?