Accessing WMS service properties in Manager

You can populate or modify the properties of a WMS service in ArcGIS Server Manager. To do so, follow these steps.

Open Manager and log in. If you need help with this step, see the topic Logging in to Manager.
Click Services > Manage Services.
In the Manage Services module, locate your service and click Edit . If you don't see your service in the list, it may be located within a subfolder under the Site (root) folder.
In the Edit module, click Capabilities.
In the capabilities list, click WMS and verify that WMS is enabled.
In the WMS Configuration list, choose Enter service properties below.
Populate or modify WMS service properties.
Click Save and Restart. The edits to your service are applied immediately.

See Available WMS service properties to learn more about setting WMS service properties.