First, in the VBA Project Explorer, select the workbook into which you want to import the module.
Then, from the File menu, choose the Import File option. This action will open the Import File dialog box. Alternatively, you can access this dialog by right-clicking on the target workbook within the Project Explorer and selecting Import File from the context menu.
In the dialog, navigate to the folder containing the module you wish to import. Select the module file to import it into the chosen workbook.
You can identify standard code modules by their .bas file extension, and UserForm modules by their .frm extension.