AT&T MERLIN LEGEND MLX-20L Supervisor Manual page 53

Features
Linear Distribution
When a call comes in, a system with linear distribution starts
searching for an available agent with the first agent (position
01) in the calling group, regardless of which agent took the
last call.
As you assign agents to telephones in a calling group with
linear distribution, be aware that the first several agents are
likely to handle most of the calls.
3-10
Calling Group Hunt Type