# Installation Customers can download install media from the [ARKANCE Helpdesk](https://helpdesk.cadstudio.cz/Document), Documents section. To start the installation, double click the *msi* file and than follow instructions in the installation wizard. The application is installed for all supported versions of Revit. After you start Revit, you will find the application commands in Add-ins tab. When you run any command for the first time, you must enter the license key, see the following pages Activation of commercial and trial versions. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://help.arkance-systems.com/pressure-drops/en/general/installation-and-activation/installation.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.