> For the complete documentation index, see [llms.txt](https://docs.docbits.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.docbits.com/administration-and-setup/setup/document-training/training-line-fields-table-training/advanced-settings.md).
# Advanced Settings
In some documents, table structures can be complex—spanning multiple lines, containing grouped information, or including unnecessary extra rows. The *Advanced Settings* in training mode allow you to fine-tune table extraction for such cases, improving accuracy and consistency.
To access these settings, activate **Training Mode** and click the **Settings** gear icon in the top action bar:
### Header Row Count
**Use this setting to define how many lines make up the table header.**
Some tables have multi-line headers. For example, this table’s header spans two lines:
Set the **Header row count** to match:
#### Why is this important?
If you don’t set this, DocBits may treat the second line as data instead of part of the header, leading to extraction errors:
**Before:**
After:
### Move Extra Rows to Trash
**Use this to discard unwanted multi-line entries, such as overflow descriptions.**
In this example, the description spills into multiple rows, but only the first line is relevant:
Enable **Move Extra Rows to Trash** to remove the overflow:
**Result after mapping:**
### Minimum Grouped Rows
**Use this when rows need to be grouped together under one main row (e.g. line items with multiple sub-lines).**
Here, only three out of six rows are relevant. Two key columns are mapped (e.g. Position, Description), while others are treated as custom fields.
Start by setting **Header row count** and the **Minimum grouped rows**:
Also enable **Move Extra Rows to Trash** to clean up irrelevant data:
Then define the grouping key column, e.g. *Position*:
**Result:**
### Reverse Grouping
**Use this when the grouping row appears *****after***** the rows it should group.**
If the row that should be grouped with other data appears *above* the grouping key, enable this option:
Enable **Reverse grouping**, group by a main column (e.g. Net amount), and use **Move Extra Rows to Trash** if needed:
**Final result:**\\
### Summary
Use the *Advanced Settings* to teach DocBits how to accurately handle more complex or inconsistent table structures. These settings improve extraction precision by accounting for:
* Multi-line headers
* Multi-row descriptions
* Grouped line items
* Reverse order of grouped data
Enabling these options during training ensures DocBits remembers the correct layout for future documents from the same supplier.
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