cm33 cm21 Assign a maintenance order to more than one Work center

Hi Gurus

I have this problem:

I created Maintenace order where the operation have to be assigned to more than one work center.

For example: the operation is 16 H

But if this operation is made by 2 people, it can be done in the same time.

How can I assign this to 2 work centers in the tcode cm33 and cm21?

regards