Campaign: Assign suitable employee responsible based on his availability (location/time) to Activity

Hi Experts

I want create activities for the BPs of the Campaign/target groups. During this activity creation system need to pick up/assign  the suitable employee responsible based on his availability (location/time).

How to achieve this functionality?

Till now have created a Communication Method in SPRO -> CRM -> Marketing -> Marketing Planning & Campaign Management -> Campaign Execution - Define Communication Method : Activity has been configured. I have created infoset/data source/attribute list as prerequisite to create costume segmentation.

Now while creating activity, system need to pick up/assign  the suitable employee responsible based on his availability (location/time). Please help to achieve this functionality?

Regards

Hamid