How to Create an Add-in

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CAUTION: Because add-in programs cannot be edited, you should keep a copy of your original workbook so that you can later update or add procedures.

Before you save an add-in, click Summary Info on the File menu in Microsoft Excel 5.0 or click Properties on the File menu in Microsoft Excel 7.0. In the Title box, type a name the your add-in. This name will be used in the add-ins dialog box, which is displayed when you click Add-Ins on the Tools menu. If you do not assign a title for the add-in, a blank check box representing your custom add-in box will appear in the add-ins dialog box.

To create an add-in program:

1. With a Visual Basic module, Microsoft Excel 4.0 macro sheet, or a dialog sheet active in the workbook that you want to convert, click Make Add-In on the Tools menu.
2. In the Directories box in Microsoft Excel for Windows or the Folders box in Microsoft Excel for the Macintosh, click the directory or folder in which you want to save the file.
3. In the File Name box, type the name you want for the compiled add-in file.
4. click OK.

To install an add-in:

1. On the Tools menu, click Add-ins.
2. Select the check box next to the add-in you want to install.
3. Click OK.

If the add-in you want to install is not listed in the Add-ins dialog box, choose the Browse button and locate the add-in.

In order to use a macros from the add-in you create, click References on the tools menu from a module sheet and assign a reference to your custom add-in. At this point, you can call the macros from your custom add-in just as you would from any other workbook.