Please post the entire information, if you don't know it for sure, it's better not to post at all. International applicants are getting confused. No point in confusing them further.
In some cases, travellers are getting their COVID Test results in 24 hours. They are legally allowed to leave the hotel and finish their quarantine at the secondary location. BUT the hotel will charge them for the 3 days. The amount will not be refunded. That's why most travellers are opting to stay the entire 3 days. In other cases, travellers are not receiving their test results for 48 hours. That's why the 3 day quarantine was put into place, to account for any delay in the report.