Alarm wont delay on entry

Hi,first post on here. I have just had the 2nd gen alarm system and all works great with the indoor camera. I have a problem with 1 thing. When the siren is activated on the main unit can you. Turn the siren off or very low as it's inside the house and notification do me. If not can you delay the entry as i have tried in the setting on the ''away'' but it don't delay,as soon as i either open the door or move the sensor picks it up,delay works what i activate it but not when i come back in the house. Thanks