# How to Automatically Assign Category Mapping Rules in Omnitron?
This tutorial provides step-by-step instructions for automatically assigning rules for category mapping operations in Omnitron.
## Step 1: Access to Omnitron
* Get access to the **Omnitron** panel.
* Enter your *Username* and *Password*, and then click the **Sign In** button.\
## Step 2: Navigate to Category Mapping Page
* Follow the **Products and Catalogs > Catalogs > Category Tree** or **Sales Channels > Category Management** steps and click on the **Auto Assign Rules** button to reach the **Category Mapping** page.
* *Category Mapping* is used for automatically assigning the category node to products for related Sales Channel.
* *Category Mapping* action can be taken for both marketplaces and web-type of sales channels. The path may change as above depending on the sales channel where the action will be taken.
*Auto Assign Rules* button, following **Products and Catalogs > Catalogs > Category Tree** steps
*Auto Assign Rules* button, following **Sales Channels > Category Management** steps
## Step 3: View Category Mapping Page
* By clicking on the **Auto Assign Rules**, the **Category Mapping** page can be seen.
* Category Mapping page includes two different tabs,
* *Category to Category* tab
* In which different categories from different catalogs can be mapped directly.
* *Rules (Product to Category)* tab
* In which rule-based product to category mapping can be made.
* Users can;
* view the *Source Category Tree* for the Category to Category mapping,
* view the *Source Category Nodes* and map these nodes to the selected Sales Channel’s Category Nodes (*Target Category Nodes*)
* make Category to Category mapping ignored
* filter Category to Category Mappings by *Excluding Ignored Categories* or *Showing Categories That Need Mapping,*
* view the schema of the *Target Category Nodes* on the *Category to Category* tab.
* Users also can;
* view, create, update and delete the Category Mapping Rules,
* filter Rules with respect to the *Status* and *Target Category Name* on the *Rules (Product to Category*) tab.
## Step 4: Add/Update “Category to Category” Mapping
* After selecting a *Source Category Tree* and clicking on the **Apply** button, the selected Category Tree can be seen on the **Category to Category** tab.
* Listed source categories can be mapped
* by clicking on the dropdown and selecting the target category nodes, or
* by clicking on the schema icon and selecting the target category nodes.
* Mapped categories can be edited by the same steps above.
* Mapped categories can be deleted by clicking on the *Delete Icon.*
For products added to the catalog, category assignments are automatically made to the target category node with respect to the relevant *Category to Category Mapping*.
*Creating / Updating “Category to Category Mapping” by clicking on the dropdown and selecting the target category nodes*
*Creating / Updating “Category to Category Mapping” by clicking on the schema icon and selecting the target category nodes.*
{% hint style="info" %}
Please note that the “*adding products to the catalog*” operation should be done after the *Category to Category Mapping* is completed.
{% endhint %}
{% hint style="info" %}
Please note that only the “leaf” source and target categories can be mapped to each other (leaf categories: sub-category nodes that do not have any child category nodes).
{% endhint %}
## Step 5: Add/Update Category Mapping Rule
* Clicking on the **Rules** button on the Category Mapping page, **Category Mapping Rules** can be seen as a list.
* By clicking on the **+ New Category Mapping Rule** button, or clicking on the **Edit** icon on the listed category mapping rules, **Add / Edit Category Mapping Rule** **Form** can be opened.
* Users can;
* select a *Target Category Name*,
* give rule(s) to the *Target Category Node* by selecting one or multiple *Attribute Name, Condition Processor* and *Attribute Value* for the *Category Mapping Rule*.
For products added to the catalog, category assignments are automatically made to the target category node with respect to the relevant *Category Mapping Rule*.
*One Rule can include multiple Attribute Name, Condition, Attribute Value groups*
{% hint style="info" %}
The “*adding products to the catalog*” operation should be done after the *Category Mapping Rule* is created.
{% endhint %}
{% hint style="info" %}
Only the “leaf” source and target categories can be mapped to each other (leaf categories: sub-category nodes that do not have any child category nodes).
{% endhint %}
{% hint style="info" %}
*Category to Category Mapping* and *Category Mapping Rules* can be formed for the same *Target Category Node*. In this case, the product assignment to the Target Category Node, provided that the product has been added to the catalog, is automatically made with respect to both mapping rules.
{% endhint %}
## Step 6: Delete Category Mapping Rule
* Listed Category Mapping Rules can be deleted by selecting the “Delete Selected Items” option and clicking on the **Apply** button.
