Thanks @Vijayalakshmi_S for the inputs.I updated the settings and tried
to enable sorting using column other than start date, may be "Assignee"
for example.As I mentioned earlier, the property "cq.inbox.settings"
gets updated in the user preferences as below- { "sharingPreferences": {
"sharesInboxWith": [], "rejectedRequests": [], "pendingRequestMap": {}
}, "outOfOfficePreferences": { "isOutOfOffice": false, "dateRange": {
"startTime": 1605739898157, "endTime": 0 }, "outOfOfficeDesignates": [],
...