--- title: Select Primary Page (Learn More) description: Select Primary Page (Learn More) author: dansimp ms.assetid: 17c779da-f683-4967-b136-94fe65373c1b ms.reviewer: manager: dansimp ms.author: dansimp ms.pagetype: mdop, appcompat, virtualization ms.mktglfcycl: deploy ms.sitesec: library ms.prod: w10 ms.date: 06/16/2016 --- # Select Primary Page (Learn More) Use the **Select Primary** page to specify the installation file of the program that the add-on or plug-in will be associated with. If the parent application is not already installed on the computer running the App-V Sequencer, you must stop this procedure and install it now. For example, if you are installing a plug-in that is designed to operate with Microsoft Excel, you must specify **Excel.exe**. You can also use an existing virtual application package as the parent application. To use an existing virtual application package, use the following procedure before sequencing the new add-on or plug-in. 1. To start the App-V Sequencer, on the computer that is running the App-V Sequencer, click **Start** / **All Programs** / **Microsoft Application Virtualization** / **Microsoft Application Virtualization Sequencer**. 2. To expand an existing package to the computer running the Sequencer, click **Tools** / **Expand Package to Local System**. 3. Browse to, and select the package (**.sprj** file) that you want to expand, and then click **Open**. This page contains the following elements: **Browse** Click **Browse** to specify the program that the add-in or plug-in you are sequencing will be associated with. ## Related topics [Create New Package Wizard (AppV 4.6 SP1)](create-new-package-wizard---appv-46-sp1-.md)