The first and more tedious way would be to manually (or in a script) push it to the browser PCs. This would entail copying the UOMWV_HelperActiveX.ocx file from the DVWeb server location (typically C:\Program Files\CA\UnicenterOutputManagementWebViewer\ActiveX) and writing them to a suitable location on each of the browser PCs, like c:\activex\. You would then have to register the control by running the command, "regsvr32 UOMWV_HelperActiveX.ocx" There's a potential ramification: applying any maintenance or installing any upgrades where the control has been updated would necessitate you pushing the new controls out to all your users/browser PCs.
A better method of distributing these files is to allow Web Viewer to do it for you by making the Web Viewer server a trusted site in each browser accessing it. You can do this from the Browser by clicking on Tools, Internet Options, Security.
In the Security panel, click Trusted sites, Sites and add the fully qualified name of your Web Viewer server i.e. https://DVWEB01.MyCompany.com. Once this has been added, the ActiveX control from this server will be automatically installed and registered. The benefit of this method ensures that future Web Viewer ActiveX control updates on the server are propagated to the browser PCs without further intervention.