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Type | Description |
|---|---|
Use-Based | These are charges for services that are incurred when they are used, like the use of Fab processing equipment. For example, if a user uses a piece of equipment in the Fab, they will be charged for that specific activity, based on the time spent using that equipment and/or the materials used for the activity. |
Fixed-Rate | These are charges for services that cost a specific amount for each billing period (each month). For example, a user may be charged $10 each month for an access card. |
Because of the different nature of these charges, you will see differences when working with allocations for these charges:
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*If you really want the details: when you modify cost object allocations, you can add and remove multiple allocations at once. So if you had allocations for Fab processing to cost objects A and B and you removed both of those and added cost objects C and D, MUMMS would not know what to do with the existing activities that had been charged to cost objects A and B (whether they should be applied to cost object C or D or some combination of the two). There is, however, a separate function in MUMMS that will allow a one-to-one replacement of a cost object retroactive to the beginning of the current billing period see the Replacing a Cost Object page for details.