"Guessing" what you mean, where WCG is to BOINC 1 project, the buffer size has 2 controls, a minimum and an additional. Latter will only be backfilled when the minimum buffer 'quota', measured in computing time per active thread, has been reached.

The backfill has it's limits... there will only be new work requested until the buffer total goes below the minimum again. E.g. you can set 1 day minimum and 5 days additional, but WCG only gives a limited number of workunits per fetch request. If that call limit was hit, work fetching stops again, whether the computing time of those WU is 6 hours or 5 days worth.

Both the minimum and additional can be set at client level in computing preferences and on the website device profiles, where you have to hit the 'Custom' radio button to get all options beyond the presets.

Project weight sounds like what I am trying to find. A number of things here are called different names or not done in the same way as normal BOINC projects. That said, I've seen a couple of newer BOINC projects have started calling things differently also. Used to be easy when all used basically a copy of Davids, (et al), originals.

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Yup, back to as it should be now. Thanks.