diff --git a/doc/installation.md b/doc/installation.md
index 9a36a60..88bb72a 100644
--- a/doc/installation.md
+++ b/doc/installation.md
@@ -1,19 +1,48 @@
-## Installation
+# Installation
+
+## Overview:
+GENERAL
+- [Requirements](#requirements)
+- [Composer](#composer)
+- [Basic configuration](#basic-configuration)
+---
+FRONTEND
+- [Templates](#templates)
+---
+ADDITIONAL
+- [Additional configuration](#additional-configuration)
+- [Tests](#tests)
+- [Known Issues](#known-issues)
+---
+
+## Requirements:
+We work on stable, supported and up-to-date versions of packages. We recommend you to do the same.
+
+| Package       | Version         |
+|---------------|-----------------|
+| PHP           | \>=8.0          |
+| sylius/sylius | 1.12.x - 1.13.x |
+| MySQL         | \>= 5.7         |
+| NodeJS        | \>= 14.x        |
+
+## Composer:
 ```bash
-$ composer require bitbag/catalog-plugin --no-scripts
+composer require bitbag/catalog-plugin --no-scripts
 ```
 
+## Basic configuration:
 Add plugin dependencies to your `config/bundles.php` file:
+
 ```php
+# config/bundles.php
+
 return [
     ...
-
     BitBag\SyliusCatalogPlugin\BitBagSyliusCatalogPlugin::class => ['all' => true]
 ];
 ```
 
-
-Add config to your `config/packages/` directory for example in `config/packages/bitbag_sylius_catalog_plugin.yaml` file:
+Import required config in `config/packages/bitbag_sylius_catalog_plugin.yaml` file:
 
 ```yaml
 # config/packages/bitbag_sylius_catalog_plugin.yaml
@@ -23,11 +52,9 @@ imports:
 
 bit_bag_sylius_catalog:
     driver: doctrine
-
 ```
 
 If You are using Bitbag SyliusElasticsearchPlugin change driver to elasticsearch:
-
 ```yaml
 # config/packages/bitbag_sylius_catalog_plugin.yaml
 
@@ -36,69 +63,116 @@ imports:
 
 bit_bag_sylius_catalog:
     driver: elasticsearch
-
 ```
 
-Import routing for example by adding `config/routes/bitbag_sylius_catalog.yaml` file:
-
+Import routing in your `config/routes/bitbag_sylius_catalog_plugin.yaml` file:
 ```yaml
-
-# config/routes/bitbag_sylius_catalog.yaml
+# config/routes/bitbag_sylius_catalog_plugin.yaml
 
 bitbag_sylius_catalog_plugin:
     resource: "@BitBagSyliusCatalogPlugin/Resources/config/routing.yaml"
 ```
 
-To display catalogs in product details You need to override product details template, for example with template provided as a part of test application in
-`vendor/bitbag/catalog-plugin/tests/Application/templates/bundles/SyliusShopBundle/Product/show.html.twig`
+### Update your database
+First, please run legacy-versioned migrations by using command:
+```bash
+bin/console doctrine:migrations:migrate
+```
 
-Create directory for yours catalog template, by default `catalog`
+After migration, please create a new diff migration and update database:
 ```bash
-$ mkdir -p templates/catalog
+bin/console doctrine:migrations:diff
+bin/console doctrine:migrations:migrate
 ```
-If you want to have product catalog templates in different directory, you can change `catalog` directory by changing `templates_dir`.
-```yaml
+**Note:** If you are running it on production, add the `-e prod` flag to this command.
 
-# config/packages/bitbag_sylius_catalog_plugin.yaml
+### Clear application cache by using command:
+```bash
+bin/console cache:clear
+```
+**Note:** If you are running it on production, add the `-e prod` flag to this command.
 
-bit_bag_sylius_catalog:
-    templates_dir: 'your_catalog_name'
+
+## Templates
+To display catalogs in product details You need to override product details template,
+for example with template provided as a part of test application. 
+
+**ShopBundle** (`templates/bundles/SyliusShopBundle`):
+```
+vendor/bitbag/catalog-plugin/tests/Application/templates/bundles/SyliusShopBundle/Product/show.html.twig
+```
+
+### Plugin provides 2 new twig functions which can be used inside templates:
+
+- for rendering catalogs by their code:
+
+Renders a catalog in place of the included code: `Rules - which products should be included inside catalog`
+```php
+{{ bitbag_render_product_catalog("test_catalog") }}
 ```
-Then your templates for catalog will be stored at `%kernel.project_dir%/Templates/your_catalog_name`.
-Default template for product catalog is `@BitBagSyliusCatalogPlugin/Catalog/Templates/showProducts.html.twig`
+- for rendering all catalogs active for given product:
 
+Renders catalogues for the products that have been selected in the rule : `Rules - in which products catalog should be shown`
+```php
+{{ bitbag_render_product_catalogs(product) }}
+```
 
+### Catalog template customization
+Create directory for yours catalog template, by default catalog
+```bash
+mkdir -p templates/catalog
+```
+
+Default template for product catalog is `@BitBagSyliusCatalogPlugin/Catalog/Templates/showProducts.html.twig`.
+You can copy it into `%kernel.project_dir%/templates/` by the command below and edit it.
 
-Finish the installation by updating the database schema and installing assets:
+```bash
+cp vendor/bitbag/catalog-plugin/src/Resources/views/Catalog/Templates/showProducts.html.twig templates/catalog/custom_template.html.twig
 ```
-$ bin/console cache:clear
-$ bin/console doctrine:migrations:diff
-$ bin/console doctrine:migrations:migrate
-$ bin/console assets:install --symlink
-$ bin/console sylius:theme:assets:install --symlink
+The selection of templates takes place in the admin panel separately for each catalogue.
+
+### Catalog templates directory
+If you want to have product catalog templates in different directory,
+you can change catalog directory by changing templates_dir.
+
+```yaml
+# config/packages/bitbag_sylius_catalog_plugin.yaml
+
+bit_bag_sylius_catalog:
+    templates_dir: 'your_catalog_name'
 ```
+Then your templates for catalog will be stored at `%kernel.project_dir%/templates/your_catalog_name`.
 
+## Additional configuration
 ### Parameters and Services which can be overridden
-```yml
-$ bin/console debug:container --parameters | grep bitbag_sylius_catalog_plugin
-$ bin/console debug:container bitbag_sylius_catalog_plugin
+```bash
+bin/console debug:container --parameters | grep bitbag_sylius_catalog_plugin
+bin/console debug:container bitbag_sylius_catalog_plugin
+```
+
+## Tests
+To run the tests, execute the commands:
+```bash
+ composer install
+ APP_ENV=test symfony server:start --port=8080 --dir=tests/Application/public --daemon
+ cd ./tests/Application/
+ yarn install
+ yarn build
+ yarn encore dev
+ bin/console doctrine:database:create --env=test
+ bin/console doctrine:schema:create --env=test
+ bin/console assets:install --env=test
+ bin/console sylius:fixtures:load --env=test
+ symfony open:local
+ cd ../../
+ vendor/bin/behat
+ vendor/bin/phpspec run
+ vendor/bin/ecs check src
 ```
 
-## Testing & running the plugin
+## Known issues
+### Translations not displaying correctly
+For incorrectly displayed translations, execute the command:
 ```bash
-$ composer install
-$ APP_ENV=test symfony server:start --port=8080 --dir=tests/Application/public --daemon
-$ cd ./tests/Application/
-$ yarn install
-$ yarn build
-$ yarn encore dev
-$ bin/console doctrine:database:create --env=test
-$ bin/console doctrine:schema:create --env=test
-$ bin/console assets:install --env=test
-$ bin/console sylius:fixtures:load --env=test
-$ symfony open:local
-$ cd ../../
-$ vendor/bin/behat
-$ vendor/bin/phpspec run
-$ vendor/bin/ecs check src
+bin/console cache:clear
 ```