After uploading your contacts, EngageBay allows you to edit a particular contact value. 

To edit a contact record, 

i. Go to the Sales dashboard. 
ii. Click on the Contact tab at the top of your dashboard.
iii. Click on the ellipsis (...) icon on the right-hand side of the contact which you want to edit.
iv. Click on Edit. From the pop-up panel, make the required changes. You can easily add or delete information. 
v. Once done, click on Submit

You can now view the contact with the updated information. 
Edit contact