NLA president Pornpetch Vichitcholchai called a 20-minute break and asked legislators to discuss the issue privately and try to settle down before the meeting resumed.
The Constitution Drafting Commission had envisioned 20 professional groups, but some legislators sought to reduce the number, fearing there could be bloc voting.
The NLA must also decide how to divide the group after agreeing on the number in Article 11.
The Senate bill is the last of 10 organic laws being deliberated. A deadline for its passage was set for today.