52 Chapter 4. Red Hat Network WebsiteFigure 4-4. System Group ListThe System Groups list contains several columns for each group:• Select — Enables you to add groups to the System Set Manager. To select groups, mark theappropriate checkboxes and click the Update button below the column. Selected groups are addedto the System Set Manager. After adding groups to the System Set Manager, you can use it toperform actions on them simultaneously. To add an intersection of groups, select them and click theWork with Intersection button. To add a union of groups, select them and click the Work withUnion button. Refer to Section 4.4.4 System Set Manager for details.• Status — Shows which type of Errata Alerts are applicable to the group or confirms that it is up-to-date. Clicking on a group’s status icon takes you to the Errata tab of its System Group Detailspage. Refer to Section 4.4.3.3 System Group Details for more information.The status icons call for differing degrees of attention:• — All systems within group are up-to-date• — Critical Errata available, update strongly recommended• — Updates available and recommended• Group Name — The name of the group as configured during its creation. The name should beexplicit enough to easily differentiate between it and other groups. Clicking on the name of a grouptakes you to Details tab of its System Group Details page. Refer to Section 4.4.3.3 System GroupDetails for more information.• Systems — Total number of systems contained by the group. Clicking on the number takes you tothe Systems tab of the System Group Details page for the group. Refer to Section 4.4.3.3 SystemGroup Details for more information.• Use in SSM — Clicking the Use Group button in this column loads the group from that row andlaunches the System Set Manager immediately. Refer to Section 4.4.4 System Set Manager formore information.