If you are not logged in already, go to www.yourdomainname.com/administrator/ (where yourdomainname.com is YOUR actual domain name) and login with your username and password.
In this backend control panel that you are now in, go to the top menu and go to COMPONENTS > PRAYER CENTER> CONFIGURE
You will see 5 tabs:
Prayer Listings: Setup how the prayer listings look and who is allowed to view it.
Request Form: Setup how the prayer form looks and who is allowed to access it.
Distribution: Choose where you want the submitted prayer requests to go
Subscription: Allows you to decide if outsiders can subscribe to the prayer chain
Word Filter: You do not need to change this if you do not want to.
Here you can configure the prayer requests component to your liking.
Request Form: Setup how the prayer form looks and who is allowed to access it.
Distribution: Choose where you want the submitted prayer requests to go
Subscription: Allows you to decide if outsiders can subscribe to the prayer chain
Word Filter: You do not need to change this if you do not want to.
Here you can configure the prayer requests component to your liking.
Fill out the form, keeping the following information in mind:
Once done, click the save button 
, located at top right of the screen
, located at top right of the screen