
Use a custom format to create a time format
When you enter time values in cells, you have to type the colon
between the hours and minutes. However, this is unnecessary if
you use a custom format.
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To create a customized time format:
1. Enter time values without colons and select the cells.
2. From the Format menu, select Cells.
3. Select the Number tab and click on Custom under
Category.
4. Type 00":"00 as the custom format.
5. Click OK.
Note: You can also use the AutoCorrect options. From the
Tools menu, choose AutoCorrect and then the AutoCorrect
tab. Type two commas in the Replace field and type the colon
in the With field. Click Add to insert this option. ...