Controlling approval status report cancel option

Dear Experts,

Is it possible to control the approval status report screen based on Stored Procedure?

Im having problem with users cancelling their draft documents before any approval status is decided upon the draft. Through the images below i want to control the cancel option they have

can the update button be controlled through store procedure? as I cant get the object type of this screen.

thanks in advance

Regards,

Balwant