You must always submit sick leave through the Remote People platform on the first day of your request.
Follow these steps:
In your Remote People dashboard, navigate to the left-hand panel and click on Time Off to begin managing your time off.
Select your leave period on the calendar by clicking on the start and end date (this can be the same if it's just for one day) or click on New Request
In the pop up window, select the Leave Type between annual leave or sick leave.
Upload supporting documentation if relevant.
Click on Confirm to submit for approval.
On right panel, check your Leave Balances.