You can add leagues, big or small, to Sports Club Stats.
   It's free.
   It's easy.
   Just email import@sportsclubstats.com the:
      structure
      schedule
      and rules
   In a few minutes you'll get back a link to the league.
   Play around, have fun, you won't break anything.
   I look forward to seeing what you create.

Info about the various settings:
   https://docs.google.com/document/d/1-UneDNk6tkOrc_B-WBnGnc5KGiy2kttXC2fW8dR7QzM/edit?hl=en

For example, here is what created this league:

LeagueBegin
  League: Super League Greece 2023-2024 Playoffs (Greece Super League Playoffs) (ID: superleague) (Sort: Div) (Playoffs: 3)
    Team: AEK Athens FC                          (AEK)                          (ID: t11w7) (StartPoints: 59)
    Team: Aris Thessaloniki                      (Aris)                         (ID: t1vqb) (StartPoints: 42)
    Team: PAS Lamia                              (Lamia)                        (ID: t1shh) (StartPoints: 34)
    Team: Olympiakos CFP                         (Olympiakos)                   (ID: t11wg) (StartPoints: 57)
    Team: Panathinaikos FC                       (Panathinaikos)                (ID: t11wh) (StartPoints: 56)
    Team: PAOK FC                                (PAOK)                         (ID: t11wj) (StartPoints: 60)
  Kind: pro
  Sport: soccer
  Gender: male
  Country: Greece
  State: 
  Level: A
  Season: 2023-2024Playoffs (current: True)
  Author: DI
  Note: 
  LotteryNote: 
LeagueEnd

SortBegin
Div: Points, Points HeadToHead, GoalsDelta HeadToHead, GoalsFor, Least GoalsAgainst, DrawLots
SortEnd

RulesBegin
  PointsForWinInRegulation:  3
  PointsForWinInOvertime:  3
  PointsForWinInShootout:  3
  PointsForLossInRegulation:  0
  PointsForLossInOvertime:  0
  PointsForLossInShootout:  0
  PointsForTie:  1
  PercentOfGamesThatEndInTie:  0.258
  PercentOfGamesThatEndInOvertimeWin:  0
  PercentOfGamesThatEndInShootoutWin:  0
  HomeFieldAdvantage:  0.66
  WeightType:  Pythagorean
  WeightExponent:  1.4
  WhatDoYouCallATie:  draw
  WhatDoYouCallLottery:  lottery
  WhatDoYouCallPromoted:  UEFA Champions League
  Promote:  1
  PromotePlus:  0
  PromotePlusPercent:  0
  WhatDoYouCallDemoted:  Out of European Competition
  Demote:  2
  DemotePlus:  0
  DemotePlusPercent:  0
RulesEnd

GamesBegin
TeamListedFirst: home
3/10/24   Lamia           0-4   AEK             (ID: g115t4i)
3/10/24   Olympiakos      1-3   Panathinaikos   (ID: g115t4j)
3/10/24   PAOK            0-1   Aris            (ID: g115t4k)
3/31/24   AEK             1-0   Olympiakos      (ID: g115t4m)
3/31/24   Aris            3-1   Lamia           (ID: g115t4n)
3/31/24   Panathinaikos   2-3   PAOK            (ID: g115t4p)
4/3/24    Olympiakos      3-0   Aris            (ID: g115t4q)
4/3/24    Panathinaikos   2-1   AEK             (ID: g115t4r)
4/3/24    PAOK            3-1   Lamia           (ID: g115t4s)
4/7/24    AEK             2-2   PAOK            (ID: g115t4t)
4/7/24    Aris            0-2   Panathinaikos   (ID: g115t4u)
4/7/24    Lamia           1-5   Olympiakos      (ID: g115t4v)
4/14/24   AEK             2-0   Aris            (ID: g115t4w)
4/14/24   Panathinaikos   3-1   Lamia           (ID: g115t4x)
4/21/24   Aris            1-2   AEK             (ID: g115t4z)
4/21/24   Lamia           0-5   Panathinaikos   (ID: g115t50)
4/21/24   Olympiakos      2-1   PAOK            (ID: g115t51)
4/24/24   AEK                   Panathinaikos   (ID: g115t52)
4/24/24   Aris                  Olympiakos      (ID: g115t53)
4/24/24   Lamia                 PAOK            (ID: g115t54)
4/28/24   Olympiakos            Lamia           (ID: g115t55)
4/28/24   Panathinaikos         Aris            (ID: g115t56)
4/28/24   PAOK                  AEK             (ID: g115t57)
5/1/24    PAOK                  Olympiakos      (ID: g115t4y)
5/8/24    Lamia                 Aris            (ID: g115t58)
5/8/24    Olympiakos            AEK             (ID: g115t59)
5/8/24    PAOK                  Panathinaikos   (ID: g115t5a)
5/12/24   AEK                   Lamia           (ID: g115t5b)
5/12/24   Aris                  PAOK            (ID: g115t5c)
5/12/24   Panathinaikos         Olympiakos      (ID: g115t5d)
GamesEnd