# Substitutions App Help Center > Documentation for Substitutions App Help Center ## Default ### Getting Started - [Who is Substitutions for?](https://substitutions.mantledocs.com/who-is-substitutions-for) - [First-time setup](https://substitutions.mantledocs.com/first-time-setup): Learn what happens during first-time setup in Substitutions, how long it can take, and what to do if setup seems stuck. - [Create your first substitution](https://substitutions.mantledocs.com/create-your-first-substitution) ### How It Works - [How substitutions work](https://substitutions.mantledocs.com/how-substitutions-work) - [Managing substitute variants](https://substitutions.mantledocs.com/managing-substitute-variants) - [Quantity-based substitutions](https://substitutions.mantledocs.com/quantity-based-substitutions) - [Bundle substitutions](https://substitutions.mantledocs.com/bundle-substitutions) - [Understanding your dashboard](https://substitutions.mantledocs.com/understanding-your-dashboard) ### General - [Get the app](https://substitutions.mantledocs.com/get-the-app): Learn how to get the app, install it, and access it for the first time. Find setup prerequisites, what happens after installation, and next steps like first-time setup and creating your first substitution. - [Common questions](https://substitutions.mantledocs.com/common-questions): Find answers to common questions about getting started, setup, billing, plans, usage limits, substitutions, and contacting support. - [View Substitution Activity / History](https://substitutions.mantledocs.com/view-substitution-activity-history): See when a substitution rule was successfully applied to customer orders. Learn how to view substitution usage history for each rule and understand why no activity appears. - [Plans and Pricing](https://substitutions.mantledocs.com/plans-and-pricing): Learn about available plans and pricing, what each plan includes, free trial availability, and how to upgrade or downgrade your subscription. - [Billing and payments](https://substitutions.mantledocs.com/billing-and-payments): Get help with billing and payments, including charges, billing cycles, plan changes, payment methods, invoices, failed payments, cancellations, refunds, and billing support. - [Usage Limits](https://substitutions.mantledocs.com/usage-limits): Learn what usage limits apply to your account, how limits vary by plan, where to check current usage, what happens when you reach a limit, when limits reset, and how to get more capacity.