Adding a new allotment to the FCC's Table of TV Allotments (47 CFR 73.622(j)) is more straight-forward than it would appear, and is the first step toward the creation of a new full-service TV station. Most of the relevant rules are found elsewhere in 47 CFR 73.622, but will be summarized here.

First, your proposed allotment needs to meet the technical requirements. The proposed allotment must meet the distance separation requirements in 47 CFR 73.622(k) with respect to other nearby allotments. A TVStudy analysis should be done using placeholder parameters to show that it passes interference with respect to Class A stations. A contour analysis using those placeholder parameters should show that the principal community contour (47 CFR 73.618) encompasses the entirely of the proposed community of license of the allotment.

Note that while the allotment must meet distance separation requirement, stations themselves do not need to do so, so as long as a feasible allotment point exists, you can pick a different location for the allotment as long as it can be demonstrated that it meets the requirements above.

Second, you would need to file a “Petition for Rule-Making” with the FCC.