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15-Minute Increments
By Richard Rost   Richard Rost on Twitter Richard Rost on LinkedIn Email Richard Rost   2 years ago

Force 15-Minute Increments in a Time Card

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Learn how to force your users to input values in 15-minute increments (or whole minutes, or whole hours, or whatever restrictions you want to set) by using a Validation Rule in Microsoft Access.

Sharon from Puyallup, WA (an Access Expert student) asks: I'm creating a time card in Microsoft Access. How do I restrict time entry to 15-minute increments? I was hoping to enter a validation rule that warns them they must enter time in 15-minute increments and let the user fix it, instead of automatically rounding. I don't know how to structure the validation test.


I'll show you how to round the start time down to the nearest 15-minute interval, and round the end time up to the next interval. This is great for billing customers! LOL. We'll use the AfterUpdate event and the TimeSerial function along with some good old VBA coding.

Silver Members and up get access to view Extended Cut videos, when available. Gold Members can download the database template from class plus get access to the Code Vault. If you signed up on YouTube you have to contact me so I can set up your account here on my web site. If you're not a member, Join Today!


Validation Rules:
Minute Function:
After Update:
Time Serial:
Two Digit Hours Not Working:

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Lydia ONeal 
10 months ago
I received the 15-minute increment video in response to my question from last week.  I had already seen this video, but was wanting to see the additional information you mentioned about calculating to the nearest quarter hour and removing breaks to get total time worked.  Can you provide me with what to review for this information.  It is not mentioned in the 15-minute increment video that I can see.  Thank you.
Richard Rost
10 months ago
Did you watch the Extended Cut?
Lydia ONeal
10 months ago
Richard, I appreciate you trying to answer my questions regarding calculating total work time.  Can you tell me what paid course I could do in order to get the answers I need.  Again, I want to know how to calculate a value from a clock in and a clock out time to nearest quarter hour minus lunch breaks, etc.  I just don't want to pay for a course if it does not have this type of detail explanation in it.  Sorry if I am asking the same thing, just not getting a satisfactory resolution.  
Thank you.
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Keywords: TechHelp Access timecard, time card, timesheet, time sheet, increments, intervals, 15-minute, 15 minutes, minute function, validation rule, validation text, timeserial  PermaLink