Find the numbers icon which is green and tap on it once to open the application. In this example, there is already a document open that is using the personal budget template. If we don't know how, we can refer to the article on how to open a document using the Numbers application on the iPhone 6. We will always have the same options along the top.
Tap on the white bubble next to "Remember the password" to have the app save our password so we don't have to enter it on this device. The bubble will turn green to indicate that the option is enabled. Tap it again to disable the option.
Now you know how to add a password to a document using the Numbers application on the iPhone 6. If you have any questions or comments, feel free to add them into the section below, and we'll do our best to get back to you. Thank you for using VisiHow.