Multiple Mail Id's once WBS budget exceeded

Dear Experts,

I have 4 Projects, Person Responsible is same for all four projects.

In T-code OPS6 we assign SAP User Id to person responsible.

Business Work Place - Maintained you manager email address for auto forward function In order to do that select the menu path settings -->office settings -->automatic forwarding.

Here I can give one email id, any possibility of multiple emails Id's.

Please Suggest

Thanks,