If you want the behavior to stack, you need to modify the Stats: Maximum Stack Count field. If this is set to 1, the behaviors will never overlap.
If it should stack for multiple casters, use the Stats: Maximum Stack Count per Caster field, you can limit the stacks per caster to 1 and overall to infinite. This way, the behavior will not overlap with itself, unless it is applied by another caster.
Also, your durations will get rounded to the next multiple of 0.0625 anyway, so I suggest specifying this yourself and use either 0.375 or 0.4375 seconds.
If you want the behavior to stack, you need to modify the Stats: Maximum Stack Count field. If this is set to 1, the behaviors will never overlap.
If it should stack for multiple casters, use the Stats: Maximum Stack Count per Caster field, you can limit the stacks per caster to 1 and overall to infinite. This way, the behavior will not overlap with itself, unless it is applied by another caster.
Also, your durations will get rounded to the next multiple of 0.0625 anyway, so I suggest specifying this yourself and use either 0.375 or 0.4375 seconds.