Как да си подредя месеците?

От следния линк:

https://support.office.com/en-sg/article/Create-or-delete-a-custom-list-for-sorting-and-filling-data-d1cf624f-2d2b-44fa-814b-ba213ec2fd61#bmcreate_a_custom_list

има указания. На английски са, но според мен са разбираеми.

Create a custom list

There are two ways to create a custom list. If your custom list is short, you can type the values directly in the dialog box. If your custom list is long, you can import it from a range of cells.

Create a custom list by typing in values

• Click the Microsoft Office Button , and then click Excel Options.
• Click the Popular category, and then under Top options for working with Excel, click Edit Custom Lists.
• In the Custom Lists box, click NEW LIST, and then type the entries in the List entries box, beginning with the first entry.

Press ENTER after each entry. - When the list is complete, click Add.

The items in the list that you selected are added to the Custom lists box. - Click OK twice.