> For the complete documentation index, see [llms.txt](https://docs.saaster.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.saaster.io/fundementals.md).

# Fundementals

- [Roles](https://docs.saaster.io/fundementals/roles.md): All roles in saaster
- [Countries and time zones](https://docs.saaster.io/fundementals/countries-and-time-zones.md): Country and time zone concept
- [Scheduletask concept](https://docs.saaster.io/fundementals/scheduletask-concept.md): The schedule tasks help to automate various tasks. This includes renewing subscriptions and other tasks.
- [Payment Service Provider](https://docs.saaster.io/fundementals/payment-service-provider.md): Payrexx
- [Administration](https://docs.saaster.io/fundementals/administration.md): Guide for the administration of saaster
- [Sales](https://docs.saaster.io/fundementals/administration/sales.md)
- [Customers](https://docs.saaster.io/fundementals/administration/sales/customers.md): Tool to manage customers in saaster
- [Invoices](https://docs.saaster.io/fundementals/administration/sales/invoices.md): Tool to manage invoices in saaster
- [Plans](https://docs.saaster.io/fundementals/administration/sales/plans.md): Creation and management of plans inside saaster
- [Modules](https://docs.saaster.io/fundementals/administration/sales/modules.md): Tool to manage modules in saaster
- [System](https://docs.saaster.io/fundementals/administration/system.md)
- [System settings](https://docs.saaster.io/fundementals/administration/system/system-settings.md): System-wide settings for saaster
- [API Settings](https://docs.saaster.io/fundementals/administration/system/api-settings.md): All settings related to the API
- [Languages](https://docs.saaster.io/fundementals/administration/system/languages.md): Settings related to languages in saaster
- [Currencies](https://docs.saaster.io/fundementals/administration/system/currencies.md): Settings concerning currencies in saaster
- [Countries](https://docs.saaster.io/fundementals/administration/system/countries.md): Settings related to your operation circle
- [Mappings](https://docs.saaster.io/fundementals/administration/system/mappings.md): Settings regarding the mappings of saaster
- [Translations](https://docs.saaster.io/fundementals/administration/system/translations.md): Settings and configuration of translations
- [Widgets](https://docs.saaster.io/fundementals/administration/system/widgets.md): Settings regarding the widgets in saaster
- [User guide](https://docs.saaster.io/fundementals/user-guide.md): User interface guide for the customer
- [Customer rights](https://docs.saaster.io/fundementals/user-guide/customer-rights.md): All customer rights available in saaster
- [Customer Navigation](https://docs.saaster.io/fundementals/user-guide/customer-navigation.md): Guide for the customer navigation
- [Edit profile](https://docs.saaster.io/fundementals/user-guide/edit-profile.md): Change your profile information
- [Reset password](https://docs.saaster.io/fundementals/user-guide/reset-password.md): Password reset form
- [Edit company](https://docs.saaster.io/fundementals/user-guide/edit-company.md): Guide to edit your company details
- [Manage users](https://docs.saaster.io/fundementals/user-guide/manage-users.md): Tool to manage users
- [Manage tenants](https://docs.saaster.io/fundementals/user-guide/manage-tenants.md): Managemant tool for tenants
- [View invoices](https://docs.saaster.io/fundementals/user-guide/view-invoices.md): View and manage your invoices
- [Add payment method](https://docs.saaster.io/fundementals/user-guide/add-payment-method.md): Guide to add payment method
- [Manage plans](https://docs.saaster.io/fundementals/user-guide/manage-plans.md): Guide on how to manage and buy plans
- [Manage modules](https://docs.saaster.io/fundementals/user-guide/manage-modules.md): Guide concerning the management of modules
- [Notifications](https://docs.saaster.io/fundementals/user-guide/notifications.md): Notifications in saaster