After you choose Unit Testing in the left pane of the ReSharper Options dialog, it looks as follows:
You can choose the Test assembly location:
- Use project default output path - when assemblies are placed in the default project location, test .dll files are retrived from the same location
- Run test from specified directory - if you use a post-build step to run tests, you should specify the location using the textbox.
You can also choose the Debugging method:
- Attach to the running process
- Use the current startup project
- Use the project being tested