For Transverse Moving Load, its similar to Normal Moving Load. You just have to choose Transverse Moving Load Code.
After this you need to add lanes to the transverse seciton. Choose the method 2 points and select beam elements by picking the 2 end points one by one
and in the same way the last element
To Display the lanes
Then you have to add vehicles to the bridge:
Then you can add your Moving Load Cases:
Then you perform Normal Moving Load Analysis.