When creating new Toolboxes in MicroStation, you may want to create toolbox inside of a toolbox.
Load *.dgnlib where toolboxes will be stored
Add new tool into this toolbox
Tools are control by Key-in commands. Add Key-in: dialog toolbox “user tool” open(here the user tool is toolbox name – custom toolbox name must be added in quotes)
Create new toolbox
In toolbox add additional second toolbox
Create tools in sub toolboxThis will create a drop list of tools in toolbox: