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How to enable and use the Period Accumulator

The Period Accumulator is a function in Jarrison Time’s Day Programs, which allows the software to accumulate (sum up) the time from a selected Time Category, such as Normal Time, Overtime, et al., before a period has completed. This summed value can be used in conjunction with other calculations if required, or for certain results to be readily available on any given day. Below are the steps to setup and use the Period Accumulator.

Note: A Time Category to accumulate into will be required. If a suitable Time Category doesn’t exist, in JT navigate to Setup > Time Category and add one, then continue below.

1) Navigate to Setup > Day Programs and select a Day Program to accumulate from.

2) From the Profile tab of the day program, enable the Period Accumulator checkbox on the right side of the tab.


3) In the dropdown next to it, select the Time Category to accumulate.

4) Navigate to the Rules tab of the Day Program, and click the Add Formula button.


Select the Time Category to accumulate into on the left side of the equals sign, in this example it’s named ‘Time Accumulated’.

From the dropdown list on the right side of the equals sign select Period Accumulated.

Select the next dropdown to ‘Not Used’.

5) Click Save. The accumulated Time Category is now ready for use. Remember to Recalculate!


Above the category has been added to the Daily Summary View, where the value increasing through the period can be observed.

Below is how the category would appear in the Daily Details (for Mar 3).


It’s important to keep in mind that the accumulated value will exclude the results of the current day, as seen above. Additional formulas may be needed in order for the results to display as expected e.g. adding NT to the formula used in this example.

Related How to enable and use the Period Accumulator Articles

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Glossary of Terms

.Net Framework

(known as “dot net”) .Net is a software development framework for building and running applications on Windows.

Access Control

Access control refers to the restriction of people’s ability to clock on biometric devices based on location and/or time. Advanced access control includes anti-passback and zone sequencing.

Access Groups

Access Groups in Jarrison Time are combinations of Devices and Time Zones, used to determine on which devices and at which times members of the Access Groups may clock. Access Groups also facilitate restrictions based on too much or too little clocking in specified time-frames.

Access Groups can by synchronized or imported by Third-Party Import, or by users.

Access Zone

In Jarrison Time an Access Zone is how devices are grouped together to form logical zones for the purposes of access control. The option is available with the JT Live module.

Adjustments (Manual Adjustments)

Adjustments are the method of covering absence of time by employees in Jarrison Time. Examples of adjustments would be Annual leave and Sick leave. Adjustments are typically applied by a user via Daily Details as needed, or can be imported from file. It’s very important that Adjustments are correctly configured and applied as paid or unpaid. (Unpaid will result in Short Time.)

Anti Passback

Anti Passback is a form of access control where people are restricted from clocking on the device most recently clocked on, until they have clocked at another device.

Approval Bypass

Approval Bypass is a feature of Jarrison Time Approvals that allows for the first approval tier to be approved without any exceptions being cleared.


Approvals are a system-wide setting that forces users to correct Exceptions and then lock periods from further editing, ready for submission to payroll.

Jarrison Time allows for up to three tiers of Approvals: Daily Summary (timesheet), Pay totals, Department totals. Starting at timesheet level, each tier needs to be approved before the next one can process.


An Area in Jarrison Time refers to a GPS location with a set radius, which designates a permitted T&A clocking area for JT Clock users.

Area Schedule

The Area Schedule is used in conjunction with JT Clock to determine where JT Clock users should clock on a given day.


Authentication in the context of access control or T&A is the means by which a person identifies themselves to biometric devices for clocking purposes.


In Jarrison Time it is possible to allow employees to earn unapproved overtime when working additional hours. The unapproved time must then be authorized (to change to payable OT) or declined by a user. Authorization categories are setup so the system knows where to send approved or declined time.

Biometric Device (Reader)

A biometric device is a type of device (also known as a reader), usually wall-mounted but can be handheld, used to authenticate a person’s identity by recognizing some part of their body. Jarrison Time is directly compatible with a wide range of biometric devices covering the following means of authentication: Fingerprint, Face, Palm. Tags and PINs can also be accepted if the device supports it.

Bouncing (Shift Sensing)

Bouncing is a system-based method of assigning Day Programs to employees based on their clocking times. The selection of Day Programs the system can apply and when to apply them needs to be configured.