Async plugin in mscrm 2011 execution order

Dear all;

i have a async plugin which on create of appointment appointments are being created by recurrent appointment mechanism in mscrm 2011 in the plugin  i am creating  another entity records(custom) for example on scheduling appointment 10 appointment created so 10 new record also create din the custom entity that is working fine,but on the created of  entity(custom) i have another plugin (async) which creates the auto number in the ID field it is possible that i can run on create plugin of Entity(custom) which is creating auto number after all the entity (custom) record created ??