Baroreceptor and Catecholamines, how they work together?

Help :) I am trying to figure out how Baroreceptors and Catecholamines affect Blood pressure... and how they work together. I understand that when pressure is noticed by the Baroreceptors the sympathetic system takes over but from there I get confused. I know we secrete more epinephrine then nor-epinephrine...and that NE vasoconstricts, and Epinephrine vasodilates... but I'm not getting the steps for how it occurs. If I could get help it be greatly appreciated! The internet is making me more confused as well.