I did this with Carly, so there must be a way with NCS Expert…
Here’s the Secondary Unlock Easy Entry option on the Carly website…
Secondary unlock
• off
• Selective central locking
• Easy entry
Selective central locking’: Unlocking the car once only unlocks the driver’s door. Unlocking it again unlocks the other doors, ’Easy entry’: Press the unlock button once to unlock all doors.
https://www.mycarly.com/blog/carly/carly-coding-for-bmw-z4/