Once a Class Invoice Fees Template is created for a given academic term, if the "**Auto-generate**" option was enabled, then a copy of the invoice will be gradually generated over the time for every student enrolled in the selected class(es) for payment.\
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If the "**Self-generate**" option was enabled, then each student of the class (or his/her parents) can log in and generate a copy of the invoice for payment.\
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Alternatively, if you want to the invoice to be **generated instantly** for all the concerned students, then you will have to trigger that. \
Read below.