Job Banding

I have done a thorough Job Evaluation of nearly 270 roles in my company, I am now trying to structure each role to a job band / level/ grade, where in each job band should also give me a range of the minimum & upper limits of salaries to be offered to people performing the same role, but who necessarily may not have the same designation.
Would anyone have a comprehensive general guide towards helping me frame a job band across all functions ?

I am rephrasing my previous question on the same topic? How does one frame the Salary structure based on Job / Role levels? what are the various tools one uses....If anyone can share the same, it would be highly appreciated. Thanks