MSP430FR2676: Driven shield for self-capacitance proxy sensors

Hi,

My customer is investigating proxy sensor using self-capacitance.
There are description for a driven shield in CapTIvate design guide.
https://software-dl.ti.com/msp430/msp430_public_sw/mcu/msp430/CapTIvate_Design_Center/latest/exports/docs/users_guide/html/CapTIvate_Technology_Guide_html/markdown/ch_design_guide.html#proximity-sensor-with-driven-shield

According to the description, one OPA is used for one proxy sensor to drive one sensor.

Questions:
1) If there are multiple sensors in the system, each shield needs to be driven by dedicated OPA, correct?
i.e. the number of OPA is the same as the number of sensors.

2)  MSP430 does not have a feature to output a signal to drive a shield, right?
An external OPA needs to be used.

Thanks and regards,
Koichiro Tashiro