When you opened the actuals in the selected project, you selected the WBS elements (by leg, manager, and/or element type) on which to enter and edit actuals.
To change the WBS leg(s) selected, complete the following steps:
Click File » Open to access the Actuals Open Dialog.
Select different or additional WBS leg(s).
These options show resource if using the Resource tab, or EOC if using the EOC tab.
To expand the display to show all actual rows of the selected WBS, click Tools » Show Actuals.
To collapse the display to hide the actual rows of the selected WBS, click Tools » Hide Actuals.
To show all actuals of all WBSs, click Tools » Show All Actuals.
To hide all actual rows of all WBSs, click Tools » Hide All Actuals.
You can display or hide any or all of the columns in the left pane of the Actuals window using Format » Column Hide. Use the Shift+Ctrl keys to select and deselect the desired columns. The highlighted fields are hidden; the non-highlighted fields are displayed. See Column Hide for more information.