Select the desired method of allocation.

Monthly Select this option if you want to set all months' overhead figures to the same amount. The amount specified in the Monthly Amount field will be copied to each month's overhead figure.
Yearly Select this option if you want Tabs3 to compute the monthly overhead amount based on a yearly overhead amount. The amount specified in the Yearly Amount field will be divided by 12 and the resulting figure will be copied to each month's overhead figure.
Amount Select this option if you want to adjust all of the existing overhead amounts by an amount. The amount specified in the Adjustment Amount field will be added to or subtracted from each month's overhead figure.
Percentage Select this option if you want to adjust all of the existing overhead amounts by a percentage. Each month's overhead figure will be adjusted by the percentage specified in the Percentage field. For example, if you want to increase all existing overhead amounts by 5%, you would enter "5" in the Percentage field and click OK.

 

Note:  A popup calculator is available when editing the amount for this field. The "<" and ">" keys can be used to increase or decrease the number by one at a time.