The group is equivalent to the third level of the Bulgarian football pyramid with four divisions existing in it.
The divisions themselves are geographically separated into North-West, North-East, South-East, and South-West, covering the football clubs of their respective zones.
The matches were suspended on 13 March 2020 as a result of the coronavirus pandemic.
[1] On 21 April 2020, the Bulgarian Football Union decided that the league will not be completed and the standings prior to the suspension of the fixtures were considered final.
[2] The one exception was to constitute the South-West zone where initially a separate playoff was to be held between Minyor Pernik and Septemvri Simitli to determine the group winner, but on 15 May the Bulgarian Football Union decided to promote the team from Pernik directly.