The "Traffic > Custom site variables > All variables" analysis is meant to display all your custom variables. You can, however, choose to display only a few of them if necessary.
Select the 'D' button located on the left of the table and select the variables of your choice.
If you always perform the same crossing, you can set predefined crosses which you will find centre top of the analysis. You can declare them from Tools > Configuration > Custom site variables > Predefined crosses.