update docs

docs/qa.md

@@ -65,17 +65,27 @@ Have a lot of fun...
 cray-ims-1eff1535-c13c-4d21-ba3f-0c852abd713b-customize-xxl7f:/root #
 ```
 
-**Q: I have clusters in different sites/systems/locations. How can I `manta` to be aware of this?**
+**Q: How can I add a new site to manta?**
 
 **A:**
 
-??? info "**WIP**"
-    This is work in progress
+Each site needs to be included in your [configuration file](configuration.md) under the `sites` section. Please get in contact with an Alps administrator to help you configuring a new site since manta needs to know the APIs to talk to.
+
+**Q: How can I list the number of sites `site` I have available?**
+
+**A:**
+
+```bash
+manta config show
+```
 
 **Q: How can I tell manta to switch from one `site` to another?**
 
 **A:**
 
-??? info "**WIP**"
-    This is work in progress
+To tell manta to talk to `site name` please run the command below.
+
+```bash
+manta config set site <site name>
+```