1) Create membership at Admin → Memberships called Snapchat

2) Create fake Payment Engine if you only accept payment in credits/tokens or set up real Payment Engine with recurring membership support (ccbill or zombaio)

3) Setup Payment Packages for snapchat sales. There are always 2 payment packages to setup even if only one-time or only recurring payment or both are used:

1. One-time package. This option uses credits/tokens of a customer's wallet
And set following values

• Payment system: choose Snapchat (fake system) or real membership 
• Package id: 0
• Description: Any text, for example: $29.99/month Snapchat access
• Select membership you have created at step 1 of this instruction: Snapchat 
  
  Click Add to add payment package and then one more step to setup payment options
  
  
• Manage prices: click and setup all payment options to offer for a customer
  
  

2. Recurring package.  In this option customer fills in credit card information and recurring payment gateway would charge his credit card automatically
2nd package is mandatory even if you are not using recurring billing

• Payment system: choose Snapchat (fake system) or real membership 
• Package id: 1
• Description: Any text, for example: $29.99/month Snapchat access
• Select membership you have created at step 1 of this instruction: Snapchat 
  
  Click Add to add payment package and then one more step to setup payment opions
  
  
• Manage prices: click and setup all payment options to offer for a customer
• Additional parameters: !limiteded_package_id=7
  replace 7 with ID of one-time package

IMPORTANT: Only ccbill or Zombaio supported for recurring payments

If you need to make 2 or more payment options then need to make 2 payment packages for each payment option.

A bit complicated but thats it!