If you have been allocated queue-scheduled time on Lesedi, you will need to submit observation requests via the SAAO Observatory Control System (OCS). Note that you need to have accepted the time allocation first, as instructed in the email informing you that your telescope time application was successful. This is done on the Accept a Proposal page on the SAAO website, where you will be prompted to log in with your Observer Portal credentials, then click the above link again.