Miscellaneous doc updates and refactored team management doc. (#6730)

### What problem does this PR solve?

#5576, #6672

### Type of change


- [x] Documentation and UI Update

docs/guides/team/_category_.json

@@ -0,0 +1,8 @@
+{
+  "label": "Team",
+  "position": 4,
+  "link": {
+    "type": "generated-index",
+    "description": "Team-specific guides."
+  }
+}