Multiple Selection with Data Validation

There is an Excel file that teaches how to perform the Multiple Selection with Data Validation operation.

Excel Multiple Selection with Data Validation

This file explains how multiple values from a dropdown list are selected and added to a single cell. Additionally, selected values are joined with semicolons using VBA code. Thus, the limits of standard data validation are extended. For this reason, it is used in tagging and categorization operations. Consequently, data entry flexibility is increased.

Hope it is useful.