[raztoki]

at this stage you can, set max chunks by
- package customiser rules, automatically
- the user with right click context function

for max siml dl you can use 'settings > advanced settings > GeneralSettings.domainrules

[ {
  "domainPattern" : ".*youtube\\.com",
  "filenamePattern" : null,
  "accountPattern" : null,
  "pluginPattern" : null,
  "enabled" : true,
  "maxSimultanDownloads" : 1,
  "allowToExceedTheGlobalLimit" : false
} ]

there is no speed limiting based on host, its just global function enabled/disabled
if you set say 100KiB download limit and you have 4 downloads, it will allocate 25KiB/sec for each.