Properties

To expose C# Properties ingame add a [MBMember] or [MBReadOnly] attribute

[MBReadOnly]
[MBSuffix("x")]
[MBDescription("Percentage of health to Start health")]
[MBHideWidgetIfDefault]
public float HealthPercentage => Health.Value / StartHealth.Value;

'HideWidgetIfDefault' can be used to not show the value if it's default (0 for numbers, empty/null for strings)

Can also use [MBMember] on Methods:

[MBMember]
public void ClearTargetAndMoveGoal()
{
    MoveGoalWorldPosition.SetValueOnline(Vector3.zero);
    MoveGoalEntity.SetValueOnline(null);
    MoveGoalRange.SetValueOnline(Range.Zero);
    Target.SetValueOnline(null);
}

Should only use this on Methods that don't need to be called on all clients (in this example the value variables are synced). Otherwise should use a 'OnlineVoidMethod' MBVariables