If you have followed the instructions for creating your SSISDB catalog, you will now be able to add users to a new role for performing administration tasks on the Integration Services server. The new ssis_admin role is a little like the sysadmin role, but just for the SSISDB catalog database.
To add a user to this role, open Management Studio and expand the Security node in the Object Explorer pane. Expand the Logins node and right-click on the account you want to alter. When the menu pops up, click on Properties:
You will first need to ensure that the user is mapped to the SSIS database, so click on the User Mappings link on the left-hand side to show the existing databases on the server. Put a check in the box to map the user and set the schema to dbo.
You will notice in the pane in the following screenshot that the list of database roles now contains an additional role called ssis_admin. Put a check in this box to add the user to the role and click on the...