Added documentation for synchronization of users in Flow and fix some typo in project sync

website/docs/addon_flow_admin.md

@@ -149,7 +149,7 @@ You can effortlessly ensure that all reviewables will be uploaded to Flow. For t
 ![Flow shotgrid review tag](assets/shotgrid/review_tag.png)
 
 
-#### First synchronization of new project
+### First synchronization of new project
 
 It is recommended to start first synchronization from Flow side. 
 
@@ -163,10 +163,10 @@ hierarchy in AYON, `Shot` items will be parented under `Sequence`.
 Please provide `code` value for this project for AYON start recognizing it. 
 (Dropdown next to your profile picture > `Projects`. You might need to add `Code` column to be visible.)
 
-No go back to your AYON server.
+Now go back to your AYON server.
 
 Create new project via `Project Settings` > `Add New Project`, it is recommended to use same name and code values as in Flow.
-Use `SG` Anatomy preset you set previously (see higher for more details).
+Use [`SG` Anatomy preset](#anatomy-preset-configuration) you set previously.
 
 Go to `Studio Settings` > `Shotgrid`, click on `Populate Table`.
 This should list all available projects on AYON server and Flow.
@@ -185,3 +185,17 @@ To keep both sides synchronized you need to:
 Synchronization between Flow and AYON started as unilateral from Flow. Two way synchronization features
 are being added, but parity is not achieved yet. It is recommended to start from Flow for now.
 :::
+
+
+### Synchronization of Users
+
+Users are only synchronized manually from Flow to AYON currently. 
+
+Synchronization is triggered by pressing `Sync Users` in `Shotgrid` tab under `Studio Settings`.
+
+![Flow synch users](assets/shotgrid/ay_sync_users.png)
+
+For users to be assigned to the tasks, they need to first be assigned to any [Project access group](admin_server_permissions.md#project-access-groups) in
+`Project Settings > Project access`!
+
+After that assignment of task, sync should be possible in both ways, eg. AYON <-> Flow.