# Master/duplicate selection

**When a row of the report is expanded you'll be able to see individual records and change the identified master record as well as remove non-duplicates.**

![](/files/tjEfH5XvaFqduXdz7ssQ)

1. **Select All:** Checking this box will select/deselect all duplicates in the table below.
2. **Select Individual:** Checking this box will flag the record for modification and enable the merge menu (see below).
3. **Set Master:** Clicking the 'Set Master' button will override the automatic selection and force DupliKit to use the selected record as the new master.
4. Hovering with the mouse over any **date field** will **reveal the time** portion of the date information.

{% hint style="info" %}
Additional, user-selected, fields can be added to this grid. See [Additional DupliKit Report Fields](/kyloe-datatools/duplikit/duplikit-settings/duplikit-weighting-system.md), in the DupliKit Settings section below.
{% endhint %}

**If a row is checked then the merge menu will appear** in the table header.

![](/files/s3MqNOcqx2rxubw80GPf)

1. **Selected:** Clicking the 'Selected' button will open the menu, as shown above.
2. **Merge:** Clicking the 'Merge' button will immediately merge the flagged records into the master record.
3. **Remove Duplicate(s):** Clicking the Remove Duplicate(s) button will mark the two record IDs as a pair that will not be matched again. This action is irreversible.


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