Calculation rules based on shopper groups question

[partswench]

SO i have to have several shopper groups with different prices, they need to be able to log in and see their pricing only...

so i set up shopper groups then set up calculation rules as and then tried to assign the calculation rules to a product the product would only take one calculation rule

so am i doing something wrong or trying to do something the programing will not do

thanks for the responses