The options in Step 6 allow you to determine who can access your report and what they can do with it.
The options in this step are:
Available groups: this shows which user groups do not have access to this report.
Selected groups: this shows which user groups have access to this report. By default, the Everyone group has access to a new report, so all users can see it. If you want only certain users to see it, remove the Everyone group from the Selected list and add the appropriate groups from the Available list. If no groups have access to the report, the report is essentially private, available only to you.
Add: selecting this button adds the selected group in the Available list to the Selected list. You can also add the group by double-clicking it in the Available list or selecting it and pressing Enter. The group is removed from the Available list.
Add all: selecting this button adds all groups from the Available list to the Selected list.
Remove: selecting this button removes the selected group from the Selected list. You can also remove the group by selecting it and pressing Enter. The group is added to the Available list.
Remove all: selecting this button removes all groups from the Selected list, and adds them to the Available list.
In addition to running the report, users in the selected group may modify or delete this report: turn this option on if the selected group in the Selected list can edit or delete this report; if this item is turned off, only you are able to do so.