Use rate table for several charge types

Hi experts,

I Need to use the same rate table for several Charge types. But, when  I tick the rate table as multiple, it issues an error that I have to include the Charge type as calc Basis. But, I simply want to use the same percentage share for several charge types.

Has someone used this before. Any hint. I have managed to save the rate table with the flag now after having maintained everything else with another Charge type. Then, I have flagged it and it removes the Charge type.

Regards

Petra