It's like any nursing role. You will learn as you gain experience. RN's have many options in an outpatient setting. In my clinic they can work as hospital liaisons (follow up our patients who were inpatient), they run the Coumadin clinic - titrating doses and providing education, in the cardiac clinic the round with the providers at the hospital, in surgery - they do surgery. There are some that work primary care and they primarily do triage, prior auths, patient education, and rooming with providers. They will do point of care testing, give medications, give vaccines, etc.
Your options are only limited by the positions available and your willingness to learn.