I’m not sure I understand what you are saying, but here’s a little blurb on it that may help.
Inside Seafile, you can create Libraries. Inside those libraries, you can then upload files and folders. Files can exist in the root of a library.
It sounds as if you have created a Library called “workshare”, and then you are trying to upload a folder called workshare into it that has subfolders and files in it. So, when you upload the workshare folder to the workshare library, it will be nested, like this.
----- workshare (folder)
Please let me know if I understood you correctly…