HighLevel's Split action in workflows now offers Even split and Weighted split alongside Random split. Even split sends contacts to each path in turn, keeping groups balanced as contacts arrive. Weighted split also routes contacts in turn, but uses the percentages you set. A 60/40 Weighted split sends three of every five new contacts to one path and two to the other.
To set it up, open a workflow, edit a Split action and choose Even split or Weighted split from Distribution Type. Name the paths and, for Weighted split, enter whole-number percentages that total 100%. Save and publish the workflow.
Existing Random split actions keep their current configuration. Once contacts enter an Even or Weighted split, its distribution settings lock. Use Reset test to edit them again, which clears the split's statistics and restarts the rotation. With Returning contacts set to Keep the same path, returning contacts follow their earlier path.