joomla jumpbox issue installing joomla module

I am getting an error installing a module in joomla... it is referencing a folder which it cant gain write access to.. Its the /joomla15/components folder it creates a folder there for the component but cant write to it. If I compare it to other folders it is missing the www-data group.

Can someone tell me how to add this so when the install creates the folder the www-data group will be added automatically??

solved my own problem

I solved my issue... I had to goto var/data/joomla15/administrator and change the ownership and permissions on the installer sub-dir while the install was waiting to start. Basically had to goto joomla start the install and before pressing the "start" button for it to proceed I had to go into the above dir and change the permissions. This method bascially allowed joomla to create the folder but before it attempted to write to it I changed the permissions.