You can use two methods for checking in files:
Select the file(s) you want to check in from the main window display and choose Commands > Check In. Enter the appropriate comments in the Check In dialog box and click OK.
The check mark(s) continue to be displayed on the file icon(s) until you choose Check In from the pop-up window. This method is valuable when you want to check in several files at once and the same comment can apply to each.
Double click on a checked-out file icon in the main window and add the appropriate comments in the Check In dialog box and click OK.
The check mark continues to be displayed on the file icon until you click OK in the dialog box. This is not the default behavior. To enable this double-click action, you must change the default behavior by Choosing View > Options, selecting the Toggle SCCS State radio button in the Double Click Action section of the Options dialog box, and then selecting the Confirm Double Click Check Out checkbox.