I would like to leave the clients Organizational standard itl file as read only. And allow the designers to add and edit to a Workspace editable itl file. Can OpenRoads read from two itl files at the same time?
I think only one itl is possible. But you can use required template from one itl file and then open another itl file.
Read-only libraries in a central location is a good idea. Write-able project .itls are a good idea (the Workset can point to it).
In the Create Template dialog, Tools > Template Library Organizer allows you to copy from one .itl to another.
When a corridor uses a template, it gets copied to the corridor. You can make minor deviations directly in the corridor; broad edits should get back to the project .itl for broader use.
Jeff Martin, PE, Civil Consultant, Bentley Systems
This is very similar to our setup. It works, but is cumbersome, because OpenRoads can only have one ITL file open/displayed at a time. Since we keep our ITL files in separate directories (the standard one is in the organizational workspace, the other one is in the project workspace) it makes it very difficult for users to navigate between the two. I have filed an Enhancement with Bentley to be able to view two ITL files simultaneously in the template viewer/editor (Enhancement 998975).
Why not keep both *.itl's within the same folder? Such is what we do and merely utilize different names for the two (actually, we are using three). Such also allows the ability to easily copy templates from one library to the other as their reference to each other is "local", so to speak. Master files of all extensions are housed in the organizational workspace, of course.
Well I don't want to clutter the organizational workspace with many project specific files, nor do I want to maintain a copy of the standard ITL in each project's workspace - that's a nightmare to maintain if anything changes in there.