Open Resource Manager, right-click the Resource Manager folder in left treeview under the Summary tab, choose Properties and then Security, and grant the "Altiris System Permission" Read.

If you have not granted Read, Read Resource Data, and Read Resource Associations for this user to the Data Class folder in the Configuration tab, you can do so here by either adding the Role to the Data Class folder in the Inventory or Events tabs. Once it has been added in one of these locations, it is automatically added to the other tab as well as within the Configuration tab.