noob question about check out parts, edit and check in from 2014 web client interface?

Using 2014 Web Client EPDM light version and need the ability to check out, edit, and check in parts from an assembly through interface? While in drawing, right click on view and open part. Once part has opened and I right click, there isn't a option to check out the part in order to make property changes. This option isn't offered when open the part or assy through EPDM either. Thanks in advance.

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