Select the Collection Team on the left-hand panel. The team members belong to the selected team will be displayed under list of Collection Team Members on the right-hand panel.
Select the contact name(s) (team members) whom you want to accept the response by ticking the checkbox beside the member names.
Click 
menu button and then once the menu opens click on Accept
Response menu item. The confirmation message appears displaying
that the Collection has been accepted by the team member.
The page will refresh automatically and the response icon will change from orange to green flag to show the acceptance.