By installing the Instance Parameter Bulk Edit app you will get see the app button in the add-in ribbon. To run the app you need to select the element you want to bulk edit instanced parameter. For example, you have a lot of windows of the same or similar family with instanced width parameter, you can have a custom width for each, even though windows are the same family.

You may want to change all these instanced parameters at once, for example by adding 50 Units to each width. Instance Parameter Bulk Edit app allows you to Add, Subtract, Multiply or Divide the current instanced parameter value by typing the mathematical operator before desired value (eg. +20; -15; *1.5; /2). Or, you can overwrite all values by typing just the number, without an operator.

The installer that ran when you downloaded this app/plug-in from Autodesk App Store will start installing the app/plug-in. OR, simply double-click the downloaded installer to install the app/plugin.

To uninstall this plug-in, exit the Autodesk product if you are currently running it, simply rerun the installer, and select the "Uninstall" button. OR, click Control Panel > Programs > Programs and Features (Windows 7/8.1/10) and uninstall as you would any other application from your system.