For each option page, the .tbp file must have a line similar to the following for libraries that expose:
Application Administrator Pages
<ApplicationAdminPage ClassName="MyAppAdminPage" ExecutionTargetDesktop="True" ExecutionTargetWeb="False"/>
<DocumentAdminPage ClassName="MyAdminPage" ExecutionTargetDesktop="True" ExecutionTargetWeb="False"/>
The .tbp file and the plugin .dll file must both be moved to the AutoCAD Map 3D Administrator bin directory. If your plugin .dll has both administrator pages and other kinds of plugins, copy the .tbp and .dll files to the AutoCAD Map 3D Client bin directory as well - the correct plugins is automatically loaded in each case. To remove the plugin, delete the .tbp file.