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: DPC North America Upper Div (DPC NA Upper) (ID: 1a23p) (Sort: Conf) (Playoffs: 2)
    Team: 4 Zoomers                   (4Z)           (ID: t110i1)
    Team: 5ManMidas                   (5MM)          (ID: t110i2)
    Team: A-Team                                     (ID: t110i3)
    Team: Black N Yellow              (BNY)          (ID: t110i4)
    Team: Evil Geniuses               (EG)           (ID: t110i5)
    Team: Quincy Crew                 (QC)           (ID: t110i6)
    Team: Sadboys                     (S A D)        (ID: t110i7)
    Team: Undying                     (UND)          (ID: t110i8)
  Kind: pro
  Sport: dota
  Gender: coed
  Country: NA
  State: 
  Level: A
  Season: 2021Season1 (current: True)
  Author: Poddo
  Note: 
  LotteryNote: 
LeagueEnd

SortBegin
Conf: Points
SortEnd

RulesBegin
  PointsForWinInRegulation:  1
  PointsForWinInOvertime:  1
  PointsForWinInShootout:  1
  PointsForLossInRegulation:  0
  PointsForLossInOvertime:  0
  PointsForLossInShootout:  0
  PointsForTie:  1
  PercentOfGamesThatEndInTie:  0
  PercentOfGamesThatEndInOvertimeWin:  0
  PercentOfGamesThatEndInShootoutWin:  0
  HomeFieldAdvantage:  0.5
  WeightType:  PercentOfPointsWon
  WeightExponent:  0
  WhatDoYouCallATie:  tie
  WhatDoYouCallLottery:  lottery
  WhatDoYouCallPromoted:  Major Playoff
  Promote:  1
  PromotePlus:  0
  PromotePlusPercent:  0
  WhatDoYouCallDemoted:  demoted
  Demote:  2
  DemotePlus:  0
  DemotePlusPercent:  0
RulesEnd

GamesBegin
TeamListedFirst: home
1/19/21   EG       2-1   4Z       (ID: g111mwu)
1/21/21   BNY      2-1   5MM      (ID: g111mwv)
1/21/21   UND      2-0   A-Team   (ID: g111mww)
1/24/21   EG       2-1   S A D    (ID: g111mwx)
1/24/21   QC       2-0   5MM      (ID: g111mwy)
1/26/21   4Z       2-0   A-Team   (ID: g111mwz)
1/28/21   EG       2-0   BNY      (ID: g111mx0)
1/28/21   UND      2-0   5MM      (ID: g111mx1)
1/31/21   QC       2-0   4Z       (ID: g111mx2)
1/31/21   S A D    2-0   A-Team   (ID: g111mx3)
2/2/21    UND      2-0   BNY      (ID: g111mx4)
2/4/21    QC       2-0   A-Team   (ID: g111mx5)
2/4/21    S A D    2-0   5MM      (ID: g111mx6)
2/7/21    4Z       2-0   BNY      (ID: g111mx7)
2/7/21    EG       2-0   UND      (ID: g111mx8)
2/9/21    4Z       2-0   5MM      (ID: g111mx9)
2/11/21   BNY      0-2   A-Team   (ID: g111mxa)
2/11/21   S A D    0-2   UND      (ID: g111mxb)
2/14/21   EG       2-0   A-Team   (ID: g111mxg)
2/14/21   QC       2-1   BNY      (ID: g111mxh)
2/16/21   A-Team   2-0   5MM      (ID: g111mxe)
2/18/21   QC       2-1   EG       (ID: g111mxi)
2/18/21   S A D    0-2   BNY      (ID: g111mxm)
2/21/21   4Z       1-2   UND      (ID: g111mxd)
2/21/21   QC       2-0   S A D    (ID: g111mxj)
2/23/21   4Z             S A D    (ID: g111mxc)
2/25/21   EG             5MM      (ID: g111mxf)
2/25/21   QC             UND      (ID: g111mxk)
GamesEnd