Category in Advanced options dialog box: Numbering

Set this advanced option to TRUE to use multinumbering when copying drawing views. If you do not want to use multinumbering, set it to FALSE. The default value is FALSE.

This advanced option is user specific and the setting is saved in options.bin under the user folder, for example, in C:\Users\<user>\AppData\Local\Trimble\Tekla Structures\<version>\UserSettings. Restart Tekla Structures to activate the new value.