# How to Add or Remove an Envelope from a Chain
{% hint style="warning" %}
You can add an envelope to a chain only if it isn’t already in another chain.
{% endhint %}
### Add envelopes to a chain
1. Select the envelopes you want to chain.
2. Click the **Add envelope to chain**  icon.
#### Add to an existing chain (merge)
{% columns %}
{% column %}
Use this when the envelope you need isn’t on the same page.
1. Select an envelope.
2. Click the **Add envelope to chain** icon.
3. In the modal, enter the subject or UUID of the envelope you want to add, then confirm.
{% endcolumn %}
{% column %}
{% endcolumn %}
{% endcolumns %}
### Remove envelopes from a chain
You can remove an envelope from a chain only if you added it to that chain.
1. In the envelopes list, select the chained envelope(s).
2. Click the **Remove envelope from chain** icon.
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