Modification to Magento plugin required

We are using a Magento plugin to show and hide categories to different Magento Customer Groups. We have it set up to hide all categories by default. There is one problem, however. There is no option to show a category to 'All Customer Groups', or at least 'Logged in users'. We need somebody to add this option to the plugin. The plugin is Groups Catalog 2 by Netzarbeiter Extensions. This is an urgent job and must be completed in three days. I must make this very clear and state you WILL NOT be paid if you cannot stick to this deadline. We are not willing to deal with slow freelancers any more.