Once a scenario is created for an investment, or an investment is added to the scenario a new team member cannot be added to that scenario.
This is working as designed.
Once a scenario is associated to an investment, only those resources already on the team, and included in the scenario, can be modified on the scenario.
Any new resources added to the team will show on the scenario screen but their records cannot be edited.
You may however make a change to the allocations, but the record will then become locked.
Release : 16.0.0
Component : Clarity Project Management
This is working as designed. If you want to add new resources to the scenario, first remove the investment from the scenario, add you new members to the team and then add the scenario back.