First of all, install bundled RH Frontend posting plugin. For this, register theme license in Rehub->Registration , then go to Rehub->Plugins and take download link from bonus plugins. Install plugin as any wordpress plugin.
After installation, go to settings of plugin and add some options, like maximum uploading file size, emails, etc
Create new form
In settings of form you can restrict access for special site roles and choose roles who can have rights for posting without moderation (other roles will have pending posts after submit)
Leave default field as is (or add some restriction and validation). Usually, I disable Excerpt field. Now, in right side you need to add all custom fields.
You can check all important keys for theme here
I show you fields for post offer section, all of them are also available in right side helper panel
rehub_offer_product_url – Url of deal (url type of element)
rehub_main_product_price – Current deal price (text)
rehub_main_product_price_old – Old deal price (text)
rehub_offer_product_desc – Short features of deal (text)
rehub_offer_product_coupon – Coupon (text)
rehub_offer_coupon_date – Field for coupon end date (date field)
Now, in each meta field you can add some description and validation. I recommend also to stript tags for all fields except (maybe) description.
End coupon date set as date field. Publish form and copy shortcode, insert it on new page and remember page. Then, return to theme options – user options and choose this page as user submit page.
You can check video
You can also create paid submit
Also, you can use advanced tips to auto add your affiliate ids to user submitted links