
Apply data validation to cells - Microsoft Support
Use data validation rules to control the type of data or the values that users enter into a cell. One example of validation is a drop-down list (also called a drop-down box or drop-down menu). …
Create a drop-down list - Microsoft Support
You can insert a drop-down list of valid entries (also called a drop-down menu or drop-down box) in Excel to make data entry easier, or to limit entries to certain items that you define.
Excel help & learning - support.microsoft.com
Find Microsoft Excel help and learning resources. Explore how-to articles, guides, training videos, and tips to efficiently use Excel.
Add, change, or remove data validation - Microsoft Support
The following example shows how to create a data validation condition to ensure that data typed into a text box control matches a specific value — in this case, the word Hello.
Add or remove items from a drop-down list - Microsoft Support
After you create a drop-down list, you might want to add more items or delete items. In this article, we'll show you how to do that depending on how the list was created.
More on data validation - Microsoft Support
You can use data validation to restrict the type of data or values that users enter into cells. This is an advanced topic on data validation. For an introduction to data validation, and how to …
INDIRECT function - Microsoft Support
How to use the INDIRECT function in Excel to change the reference to a cell within a formula without changing the formula itself.
Restrict data input by using validation rules - Microsoft Support
You can use the Validation Rule property and the Validation Text property of a form control to validate data that is input to that control and to help users who input data that is not valid.
Using check boxes in Excel - Microsoft Support
Check boxes are a versatile feature in Excel, useful for making interactive lists and forms. In this article, we'll cover how to add, remove, and toggle them. Insert check boxes Select the range …
Examples of common formulas in lists - Microsoft Support
On the Settings > Create Column page, select Calculated (calculation based on other columns). In the Additional Column Settings section, enter the formula that you want to use in the …