If I'm understanding you correctly, you want to control resourses on each host independently, you should be able to select the host from here http://boincstats.com/bam/host_list.php
to set independently. Or locally using advanced>preferences.
Oh, I apologize for my poor explanations.
Of course I can control each computer from de host_list. And I do.
The problem came when, after assigning resources in that page, I went to http://es.boincstats.com/bam/resources.php and I put zero to each project there.
Why I did a such thing? The main reason was that sometimes, after booting my computer, the resources assigned to each project at my BOINC Client were not taken from the host resources
but the general resources of the project. As all the values were very similar in both pages I didn't know if I had to make a synchronization with BAM or not. I decided to put a "significant" value which clearly told me "It's necessary to synchronize!". (I'm sorry, I think all this is much messy to explain).
Then I put zero to all the project resources
and that caused all client debts going to infinity and both the cpu scheduler and the work fetcher working bad (indeed not working at all).
Ergo, I think (and suggest) that zero value must not be permitted at general resources page.
Since I put each general project's resource to 100 I haven't got the error again. Now I synchronize with BAM immediately after each booting.
Hope to have explained sufficiently.
Eppur si muove