You can remove the prefix of members in a blendshape group by following these steps:
1. Open Maya and select the blendshape group you want to edit.
2. In the \"Outliner\" window, select the members you want to remove the prefix from.
3. In the \"Attribute Editor\" window, find the \"Shape Name\" attribute, which contains the member name\'s prefix.
4. Change the value of the \"Shape Name\" attribute to a new name without the prefix.