hpow can i change n my payment method?

hpow can i change n my payment meathod?my form has been set up as paypal

but i need to change it to a purchase order. where i will be dealing with the payment.

my form is very large & i would hate to have to re-do the whole thing.

thank you

 

sorry, i have 8 broken fingers and my typing is not the best

This is a re-post of a comment on Setting Up Your First Order Form