# Multiselect Dropdown
### i. Enable Multiselect from web portal
1. Click on the `+` button to add a new column.
2. Provide column `Name` and `Type` = `Select`.
Add Select Column
3. Click on `Validations`.
Multiselect Validations
4. We can provide allowed values in `Select Values`.
5. We can also enable Multi Select for select column. Which allows user to select multiple values in the cell.
Specifying Delimiter
6. Additionally we can sepcify `,` or `;` as delimiter for multi-select values.
### iii. Enabling Multiselect Dropdown using [Runtime Schema](https://docs.impler.io/features/runtime-schema)
We can enable the Multiselect feature by providing a custom schema with the `allowMultiSelect` flag in our frontend code.
```javascript
showWidget({
schema: [
{
key: 'choice',
name: 'Eating Choice',
type: 'Select',
selectValues: ['Fruit', 'Vegetables', 'Nuts'],
allowMultiSelect: true,
delimiter: ';'
}
]
});
```
## Sample file generation and format
Impler creates `.xlsx` and `.xlsm` files based on the columns' configuration:
* **.xlsx File**: Generated if no columns have Multiselect enabled.
* **.xlsm File**: Generated if any column has Multiselect enabled.
### Writing in .xlsm Files
When a column is marked as Multiselect, Impler appends `#MULTI` to the end of the column name in the Excel file. This allows users to select multiple options in the cell.
For detailed steps on how to write in `.xlsm` files refer to [writing-effectively-into-.xlsm-files](https://docs.impler.io/additional-resources/writing-effectively-into-.xlsm-files "mention").
## Data Format
Columns with the Multiselect feature will send an array of selected values when sent to application [using-webhook](https://docs.impler.io/data-retrieval/using-webhook "mention") or [using-frontend-callback](https://docs.impler.io/data-retrieval/using-frontend-callback "mention").
***
If you have any questions, suggestions, or comments. Feel free to reach out to us over [**Discord**](https://discord.impler.io). We’re constantly improving to deliver the best Data Importer for your product, and we value your input.
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