URGENT- To have business activity set to "Complaints" by default

Hi

While trying to create a CRM Activity relating to Customer Complaints, the users need to drill down selection menu and then are loosing time within the Customers Relationship.

Requested to have Business Activity set by default as "COMPLAINT" for all the listed users.

How " Complaints" can be set as default activity. Please suggest.

Thank you

Regards,

Sanyogita