Once you have created a rubric or grading form, it will be available to you in all the modules you are enrolled on via the Rubric Manager.
If you want to share a rubric with colleagues, you can export your rubric or grading form from the Rubric Manager as an rbc file.
In the same way, if you want to use a rubric or grading form which belongs to someone else, they can export it, share it with you, and you can import it into your Rubric Manager.
Full guidance on marking using Grading Forms is available in our online guidance.