add additional option for locking and unlocking files

Author: Meaghan Lewis

docs/using/locking-files.md

@@ -5,6 +5,8 @@
 From the Project tab, right-click on a file to open the context menu and select `Request Lock`.
 <img src="images/request-lock.png"/>
 
+An additional way to lock a file is by selecting it and going to `Assets` -> `Request Lock`.
+
 ## View locks
 
 After requesting a lock, a lock icon appears in the bottom right-hand corner of the file.
@@ -15,12 +17,14 @@ A list of all locked files will appear in the **Locks** view in the GitHub tab.
 
 ## Release locks
 
-There are two ways to release locks:
+There are three ways to release locks:
 
 1. From the Project tab, right-click on the locked file to open the context menu and select the option to `Release Lock`.
 <img src="images/release-lock.png"/>
 
 2. From the GitHub tab under **Locks** view, right-click to open the context menu and select to `Release Lock`.
 <img src="images/locks-view-right-click.png"/>
 
-There are also two options for how to release a lock on a file. Always choose the `Release Lock` option first. The `Release Lock (forced)` option can be used to remove someone else's lock.
+3. Select the file to unlock and go to select the menu option `Assets` -> `Release Lock`.
+
+Note: There are also two options for how to release a lock on a file. Always choose the `Release Lock` option first. The `Release Lock (forced)` option can be used to remove someone else's lock.