From Family Tree, how do I open the source box and attach sources?

From a person in Family Tree, you can open your source box and attach a source from it. Use the full website. Source box does not appear on the mobile app or Family Tree Lite.

Steps (website)

1. In the top menu, click Family Tree, and then click Tree.
2. Find the person for whom you want to add a source.
3. Click the person's name. In the details that pop-up, click the person's name again.
4. Click the Sources tab. 
5. Click the Add Source button, and then click Attach from Source Box.
6. To the right of the source, click Attach. (If the source is attached to a person, it shows a paper clip icon instead of an Attach button.)
7. Explain your reason for attaching the source.
8. Click Attach.

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