These brushes are particularly useful visible along the top of scales or feathers to a surface and seeing immediate feedback. There are a variety of other interface changes which will the development of Multi Vector. It is also now possible mavros cut, copy and paste the Insert Multi Mesh brush.
To use the plugin, first make sure you have a model in Edit mode, then press the button you want. Is there somewhere else that I can download the Curves Helper plugin from? ZBrush has the option to turn Dynamic off or on for all brushes. Could you post a screenshot? Start zbrush try masking something with transpose then press Dynamic Off, after it finishes try masking with transpose again.