You can also create your own pass templates by cloning the generated ones but then don't forget use your templates by to selecting them in your Pass campaigns.
Modify Apple Wallet/Google Wallet campaigns
WalletIn by default provides one Apple Wallet and a Google Wallet campaign each out of the box. These campaigns (Menu->Campaigns) are used to facilitate the first download of a pass by a customer. In other words, these campaigns are used when a pass is downloaded by your customer for the first time. The Campaign Ids for these campaigns are:
You want to only modify these campaigns. DO NOT change the Campaign Ids. DO NOT delete these campaigns.
Modify the generated Apple Wallet/Google Wallet campaigns (Menu->Campaigns) to customize your message and instructions on passes.
Use Preview ?️ from the campaign page to check how your pass would look.