Edits roles and permissions doc

Author: chloeredhat

docs/modules/ROOT/pages/getting-started/roles_persmissions.adoc

@@ -8,26 +8,19 @@ When the administrators at {ProductName} create a workspace for you, you automat
 
 The following list shows the three roles that are available in a workspace:
 
-* *Contributor*: Ideal for users who actively push to your workspace
-* *Maintainer*: Ideal for users who need to manage the workspace, but who don't need access to sensitive actions like managing security or deleting a workspace
-* *Admin*: Ideal for users who need full access to the workspace, including sensitive actions like managing security or deleting a workspace
+* *Contributor*: for users who actively push to your workspace
+* *Maintainer*: for users who need to manage the workspace, but who don't need access to sensitive actions like managing security or deleting a workspace
+* *Admin*: for users who need full access to the workspace, including sensitive actions like managing security or deleting a workspace
 
-== Adding or changing users 
-
-We currently do not support adding users in the user interface (UI). To add a collaborator, you can send us a Slack message in the https://rhdevnation.slack.com/archives/C04LXT1EU7K[#software-supply-chain-security] channel and we will process your request.
-
-Or, send a message in the chat feature in the {ProductName} application. 
-
-////
+== Managing users 
 
 To begin adding, editing, or removing users from a workspace, complete the following steps:
 . In the side bar, select *Workspaces*. 
 . Select the tab *Access*. 
 
 === Adding a user to a workspace
 
-. In *Find by username*, enter the users that you want to grant access to. 
-* Optionally, change *Username* to the search option of your choice. 
+. In *Find by username*, enter the Red Hat Trusted Application username that you want to grant access to. 
 . Select *Grant Access*. 
 . In *Assign role*, select either *Contributor*, *Maintainer*, or *Admin*. 
 * To view the permissions for each role, select *Show list*. 
@@ -45,8 +38,6 @@ To begin adding, editing, or removing users from a workspace, complete the follo
 * To view the permissions for each role, select *Show list*. 
 . Select *Save changes*. 
 
-////
-
 == Permissions by role
 
 The following table shows the actions that each type of collaborator can perform: