diff --git a/en_US/iredadmin/2-iredadmin-pro.restful.api.md b/en_US/iredadmin/2-iredadmin-pro.restful.api.md
index c97909ec..2fb62872 100644
--- a/en_US/iredadmin/2-iredadmin-pro.restful.api.md
+++ b/en_US/iredadmin/2-iredadmin-pro.restful.api.md
@@ -169,6 +169,17 @@ Notes:
     `language` | Preferred language of iRedAdmin web UI | `language=en_US`
     `isGlobalAdmin` | Mark this admin as global admin | `isGlobalAdmin=yes`
 
+    Below parameters are used by normal domain admin (`isGlobalAdmin=no`). With `isGlobalAdmin=yes`, these parameters will be discarded.
+
+    Parameter | Summary | Sample Usage
+    --- |--- |---
+    `maxDomains` | how many mail domains this admin can create | `maxDomains=5`
+    `maxQuota` | how much mailbox quota this admin can create. Quota is shared by all domains created/managed by this admin. Must be used with parameter `quotaUnit`. Sample: 10TB, 20GB, 100MB.| `maxQuota=2`
+    `quotaUnit` | Quota unit used by `maxQuota` parameter. Must be used with parameter `maxQuota`. Possible values: TB, GB, MB. | `quotaUnit=TB`
+    `maxUsers` | how many mail users this admin can create. It's shared by all domains created/managed by this admin. | `maxUsers=100`
+    `maxAliases` | how many mail aliases this admin can create. It's shared by all domains created/managed by this admin. | `maxAliases=200`
+    `maxLists` | how many mailing lists this admin can create. It's shared by all domains created/managed by this admin. | `maxLists=300`
+
     </div>
 
 !!! api "`DELETE`{: .delete } `/api/admin/<mail>`{: .url } `Delete an existing domain admin`{: .comment } `upcoming`{: .upcoming }"
@@ -184,7 +195,7 @@ Notes:
     `language` | Preferred language of iRedAdmin web UI | `language=en_US`
     `isGlobalAdmin` | Mark this admin as global admin | `isGlobalAdmin=yes`
 
-    Below parameters are used by normal domain admin. With `isGlobalAdmin=yes`, they will be removed.
+    Below parameters are used by normal domain admin (`isGlobalAdmin=no`). With `isGlobalAdmin=yes`, these parameters will be discarded.
 
     Parameter | Summary | Sample Usage
     --- |--- |---
diff --git a/html/iredadmin-pro.restful.api.html b/html/iredadmin-pro.restful.api.html
index e16ff32a..80f80632 100644
--- a/html/iredadmin-pro.restful.api.html
+++ b/html/iredadmin-pro.restful.api.html
@@ -414,6 +414,48 @@ to be a domain admin.</p>
 </tr>
 </tbody>
 </table>
+<p>Below parameters are used by normal domain admin (<code>isGlobalAdmin=no</code>). With <code>isGlobalAdmin=yes</code>, these parameters will be discarded.</p>
+<table>
+<thead>
+<tr>
+<th>Parameter</th>
+<th>Summary</th>
+<th>Sample Usage</th>
+</tr>
+</thead>
+<tbody>
+<tr>
+<td><code>maxDomains</code></td>
+<td>how many mail domains this admin can create</td>
+<td><code>maxDomains=5</code></td>
+</tr>
+<tr>
+<td><code>maxQuota</code></td>
+<td>how much mailbox quota this admin can create. Quota is shared by all domains created/managed by this admin. Must be used with parameter <code>quotaUnit</code>. Sample: 10TB, 20GB, 100MB.</td>
+<td><code>maxQuota=2</code></td>
+</tr>
+<tr>
+<td><code>quotaUnit</code></td>
+<td>Quota unit used by <code>maxQuota</code> parameter. Must be used with parameter <code>maxQuota</code>. Possible values: TB, GB, MB.</td>
+<td><code>quotaUnit=TB</code></td>
+</tr>
+<tr>
+<td><code>maxUsers</code></td>
+<td>how many mail users this admin can create. It's shared by all domains created/managed by this admin.</td>
+<td><code>maxUsers=100</code></td>
+</tr>
+<tr>
+<td><code>maxAliases</code></td>
+<td>how many mail aliases this admin can create. It's shared by all domains created/managed by this admin.</td>
+<td><code>maxAliases=200</code></td>
+</tr>
+<tr>
+<td><code>maxLists</code></td>
+<td>how many mailing lists this admin can create. It's shared by all domains created/managed by this admin.</td>
+<td><code>maxLists=300</code></td>
+</tr>
+</tbody>
+</table>
 </div>
 
 </div>
@@ -460,7 +502,7 @@ to be a domain admin.</p>
 </tr>
 </tbody>
 </table>
-<p>Below parameters are used by normal domain admin. With <code>isGlobalAdmin=yes</code>, they will be removed.</p>
+<p>Below parameters are used by normal domain admin (<code>isGlobalAdmin=no</code>). With <code>isGlobalAdmin=yes</code>, these parameters will be discarded.</p>
 <table>
 <thead>
 <tr>