How do I restore permission on my ZTE MAVEN 3 for a required app?

[Android Central Question]

I am too old to figure out this technology! I got a new phone last weekend and when my SIM card contacts did not transfer to my new phone and the ATT store could not transfer them for me, I just tried to start up my new phone and move ahead. When the prompt came to give permission for access to everything, I said no, not realizing I was locking out my ability to add and save contacts to my phone.

What do I? How do I regain control of the permissions to add contacts?

HHEHEHHEHELLLLllPPP? PPPLLEEEEAAASSSSEEE?