I want the WooCommerce payment plugins to appear inside a Non-WooCommerce WordPress Theme

I need the WooCommerce plugins to appear inside my theme’s Default Payment Gateways and also in the MONEY WITHDRAWAL section as an option in the Microjobengine WordPress theme. My theme have a fully functional shop system and I only need to add the WooCommerce Payment Gateway Plugin support. I don’t need the WooCommerce pages (Shop base:, Cart:, Checkout:, My account:, Terms and conditions) that comes with Woocomerce system.
I have a Child Theme of my Parent theme and it is Important that the modifications to be on the Childtheme of my theme not on the Parent theme in order not to overwrite the code of the parent theme when the parent theme get updates.
Please contact me for the site credential.