Hi,
I found your job post on Freelancer project feed page and I am very interested in this particular project. I have gone through the description and I understand your requirement very well. I have worked on Gantt project management tool and have created a similar tool in excel for my previous organization. I have a good knowledge of MS Excel, macros, vba scripting and excel formulas. I have created a similar project management tool in excel before, kind of one you are trying to develop. The tool helps you to manage project tasks and subtasks, identifies weekdays and weekends, assign resources and tracks project status. It is basically for project task and time management. I can do this for you.
I will be available for a further discussion till 07:00 PM EST. Otherwise, you may propose some other time that you are more comfortable with.
Regards
Vikas