<p>In both cases you will be presented with a form where you simply need to enter the new start and end date and save the budget.</p>
+<p>
+ If you want the amounts of budget and funds to be modified by a percentage,
+ fill the text field for 'Change amounts by'. This should be a number,
+ positive or negative. Decimal point can be used.
+</p>
+
+<p>
+ If you decided to change the amounts of budget and funds, you can also
+ choose how to round the result by filling the text field for 'If amounts
+ changed, round to a multiple of'. This should be a positive number. Decimal
+ point can be used.
+</p>
+
+<p>
+ Example: If you duplicate a budget which have an amount of 999, and decide
+ to change amount by 2.6% (1024.974) and to round to a multiple of 0.5, the
+ result will be 1024.5 (amounts are rounded down).
+</p>
+
<p>Check the box for 'Mark the original budget as inactive' if the original budget should no longer be used.</p>
<p>Check the box for 'Set all funds to zero' if you wish the new budget to contain all the same fund structures as the previous budget but no allocations until you manually enter an amount in the fund.</p>