In the navigation panel, choose to edit an entry either by athlete or by event:
Then use the dropdown-list to select the required athlete or event:
A list of athletes (or events resp.) appears:
Apply the checkboxes to select the entries you want for the current athlete (event resp.) and then click the button.
As you move the mouse cursor over a qualification time, you can see the meet date/city of the time:
Qualification times are shown according to the rules for the qualification period of the selected meet.
For relay entries just select the relays you have and press the button.