Discount after the first

The discount I am trying to have is full price for the first, then a discounted rate afterwords.
Example:
Individual price is: $100
They do a group registration for 5 people. I need it to charge full price for the first registrant and $25 for the rest.
Member 1 - $100
Member 2 - $25
Member 3 - $25
Member 4 - $25
Member 5 - $25
Total - $200

But the group rate does not work that way.
If I set Individual price to $100. Then set the Group Discount Rate to Registrants Number (2) Rate/Person (25.00). What happens is...
Member 1 - $25
Member 2 - $25
Member 3 - $25
Member 4 - $25
Member 5 - $25
Total - $125

Is there a way to make the First member pay full price and the rest after that pay the discounted price?

Hi Ben

Need to have clever setup using group registration rates. Here are the solution :

1 . Set Individual price to 100$.

2. If they register for 2 members, the total is 125$, so rate/person is 62.5$. In the first row of group registration rate, enter 2 62.5

3. If they register 3 members, total price is 150, so rate/person is 50. In the second row, enter

3 50

4. If they register for 4 person, total price is 175$, so rate/person is 43.75, in the third row, enter :

4 43.75

......And so on

Hope you understand the idea and can setup it to meet your need.

Tuan