diff --git a/docs/api/interfaces/mongo-memory-instance-opts.md b/docs/api/interfaces/mongo-memory-instance-opts.md
index bd0627ace..52e978cb1 100644
--- a/docs/api/interfaces/mongo-memory-instance-opts.md
+++ b/docs/api/interfaces/mongo-memory-instance-opts.md
@@ -80,7 +80,7 @@ Set which storage engine to use, uses [`StorageEngine`](#helper-type-storageengi
 
 Typings: `replicaMemberConfig?: ReplicaMemberConfig`
 
-Set custom a custom Replica Member Config, uses [`ReplicaMemberConfig`](TODO).  
+Set custom a custom Replica Member Config, uses [`ReplicaMemberConfig`](./mongo-memory-instance-replicamemberconfig.md).  
 Only has a effect when started with [`MongoMemoryReplSet`](../classes/mongo-memory-replset.md).
 
 ## Helper Type `StorageEngine`
diff --git a/docs/api/interfaces/mongo-memory-instance-replicamemberconfig.md b/docs/api/interfaces/mongo-memory-instance-replicamemberconfig.md
new file mode 100644
index 000000000..66bbe0b37
--- /dev/null
+++ b/docs/api/interfaces/mongo-memory-instance-replicamemberconfig.md
@@ -0,0 +1,66 @@
+---
+id: mongo-memory-instance-replicamemberconfig
+title: 'ReplicaMemberConfig'
+---
+
+API Documentation of `ReplicaMemberConfig`-Interface
+
+## Values
+
+### arbiterOnly
+
+Typings: `arbiterOnly?: boolean`  
+Default: `false`
+
+Set a member to be a arbiter, see [MongoDB ReplSet Arbiter](https://www.mongodb.com/docs/manual/core/replica-set-arbiter/) and [MongoDB add an Arbiter to the ReplSet](https://www.mongodb.com/docs/manual/tutorial/add-replica-set-arbiter/).
+
+### buildIndexes
+
+Typings: `buildIndexes?: boolean`  
+Default: `true`
+
+Set whether to automatically build indexes.
+
+### hidden
+
+Typings: `hidden?: boolean`  
+Default: `true`
+
+Set a the instance to not show up in the command `hello`.
+
+### priority
+
+Typings: `priority?: number`  
+Default: `1`
+
+Set the priority in becoming a Primary. Higher is more likely. `0` is only for arbiters.
+
+### tags
+
+Typings: `tags?: any`  
+Default: `null`
+
+Set custom tags for a member, see [MongoDB ReplSet tags](https://www.mongodb.com/docs/manual/tutorial/configure-replica-set-tag-sets/).
+
+### slaveDelay
+
+Typings: `slaveDelay?: number`  
+Default: `0`
+
+Set how long behind the secondary members should be behind the primary, for more see [MongoDB 4.x Configure a Delayed Replica Set Member](https://www.mongodb.com/docs/v4.2/tutorial/configure-a-delayed-replica-set-member/).  
+This option is only for MongoDB `4.x`, for `5.0` or higher use [`secondaryDelaySecs`](#secondarydelaysecs).
+
+### secondaryDelaySecs
+
+Typings: `secondaryDelaySecs?: number`  
+Default: `0`
+
+Set how long behind the secondary members should be behind the primary, for more see [MongoDB Configure a Delayed Replica Set Member](https://www.mongodb.com/docs/manual/tutorial/configure-a-delayed-replica-set-member/).  
+This option is a for MongoDB `5.0` or higher.
+
+### votes
+
+Typings: `votes?: number`  
+Default: `1`
+
+Set how many votes this member has for electing a primary. Arbiters only have a static vote of `1`.
diff --git a/website/sidebars.js b/website/sidebars.js
index 27a7b0ec1..f1c81a3e6 100644
--- a/website/sidebars.js
+++ b/website/sidebars.js
@@ -14,6 +14,7 @@ module.exports = {
       'api/interfaces/mongo-memory-server-automaticauth',
       'api/interfaces/mongo-memory-server-createuser',
       'api/interfaces/mongo-memory-instance-opts',
+      'api/interfaces/mongo-memory-instance-replicamemberconfig',
     ],
   },
   guides: {