Access to the Citrix Daas Advanced web portal (https://xenapp-eu.cloud.com/)
On the left side click on Delivery Group, select the app that you want to publish and click on edit
on the menu in right side, in the User tab, cli on the Add button
in the From this location field, click on Browse
select the domain and click on Done
in the Name field, digit the username or the group that you want to add and click on Find Now
select the username or the group and click ok
click on OK
Then click on Save
After these settings to be made on the Cirix web page, you need to add the user (or group) as a member of the group: Citrix_Labware_PomDev (for the dev environment) or Citrix_Labware_PomVal (for the dev environment) or Citrix_Labware_PomProd (for the production environment).