# Fundementals

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