Though this Excel Developer tab is kept hidden you can enable its visibility.

Note: Date Picker control of Microsoft works Microsoft’s very smoothly in the Excel 32-bit versions but not in Excel 64-bit version. Here is the complete method to create a calendar in Excel perform this task step by step: Well putting the drop-down calendar in Excel is quite easy to do but just because the time and date picker control are hidden so many users don’t know where it actually exists. To create calendar in Excel you need to insert a calendar. Method 1: Create Calendar In Excel Using Date Picker Control