Contract Project Type Setup Question

Hi,

My client only generates billing and revenue by Event.  I am setting up the Contract Project Type and for some reason is requiring me to enter the following information under the Billing Information tab of the Project Type screen. How can I skip this step since it does not make any sense for Event Based Billing?

1) Billing Job Group

2) Bill Rate or Burden  Schedule for Labor and Non-Labor

3) Invoice Formats for Labor and Non-Labor

Thanks,

Carla