Select New Manager
Note: You have to be the manager of the file to perform this operation.
You can select a new manager for a file by using the LiveProject
Explorer window. Right-click on a file, select Properties, then Change Manager
button:

Clicking the Change Manager button will show a new window, where you can select
a new manager from the list of users:

A list of the current users are shown in the dropdown box. Select the new one and
press OK.