about operations on opening notification

There is now a TI CC2451 Bluetooth module as a reference. Using nRF connect to monitor the log content, it is found that when the mobile phone is connected to Bluetooth and the module uploads data to the mobile phone, the module will send relevant instructions to the communication channel to enable the channel to automatically open the notification function, and it does not need the mobile phone endpoint to select and open the notification switch.
And I need nRF 52832 have the same function. Can you provide some sample code to tell me which parameters need to be added or changed? (SDK 15.3)

Hope to be helped.
Best wishes!