Users log in to the OLISS Web client, they will enter the workbench by default, switch to the "Items Statistics" interface, find the "Crew Return Rate " chart, click " Details" in the upper right corner, enter the Crew Return Rate Details interface, and can filter the time range, target vessels, and target positions according to their needs. Click on "Rank" to pop up a drop-down menu, check the target rank , click "Confirm", and after filtering the position, when the mouse hovers over the icon, only the return data of the target crew members of that vessel will be displayed, and the return crew members at the bottom of the interface will also only show the crew data under the filtered conditions.