Final answer:
The number of BCaBAs that can be supervised depends on BACB regulations.
Step-by-step explanation:
The number of BCaBAs that an individual is allowed to supervise depends on the requirements and regulations set by the Behavior Analyst Certification Board (BACB).
As of February 2021, according to the BACB, a Board Certified Assistant Behavior Analyst (BCaBA) is permitted to supervise trainees pursuing the Registered Behavior Technician (RBT) credential. However, BCaBAs are not authorized to supervise other BCaBAs or Board Certified Behavior Analysts (BCBAs).
It's important to consult the most recent guidelines from the BACB or contact them directly for any updates and specific information regarding supervision requirements.