I did look up the format, because I was not familiar with it. This is what I have found, Danimal5981 if you see anything different or know more than what I and JustinCase0110 know, please let me know. Going into the league kind of blind.
Each of the 16 competitors in the Pro League plays every other team twice in the regular season, for a total of 30 matches between August and April. A win earns three points and a draw earns one point. Teams are ranked by total points, then by total wins and finally by goal difference, number of scored goals, number of away goals, and number of away wins. If teams are still level, a test-match is played in two legs to determine the final order in the standings. A playoff phase is then played from May.
The point system in the championship playoff is the same as during the regular season, except that each team starts with half of the points they won in the regular season, rounded up to the nearest integer. The points gained by rounding are deducted in the case of a tie.
The top six teams from the regular season enter the championship playoff, with the first-placed team winning the championship of Belgium. Each team plays their opponents twice and the teams are ranked by points, points from rounding, wins, etc. as in the regular season.