Access IVR from local extension

Hi all.

I installed asterisknow and I configured some extension, can make call between them, I created the ivr…I dont have a sip provider yet,I am just testing and learning. And I want to call to a extension, for example 100 and listen de IVR. The idea is each sip user can access to the ivr dialing the 100.

How can I setup the IVR to be access from local extension?