There are two groups are used for setup web client and web management users while installing Dynamics GP 2013 web client. So, if you want to give access to Web Client and Web Management Console for the users, create two domain group with adding the users who all are wants to access web client and web management. Finally use these groups while installing the web client as shown below.
Note: You simply remove/add users to these groups to manage the web client and web management console access. Also you can use the same group for both web client and web management console users.
Hope this helps!!!