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 China Lower Div   (DPC China Lower) (ID: 1a23z) (Sort: Conf) (Playoffs: 1)
    Team: CDEC Gaming           (CDEC)            (ID: t110kd)
    Team: Dalanjing Gaming      (DLG)             (ID: t110ke)
    Team: Dragon                                  (ID: t110kf)
    Team: Dynasty                                 (ID: t110kg)
    Team: Phoenix Gaming        (Phoenix)         (ID: t110kh)
    Team: Royal Never Give Up   (RNG)             (ID: t110ki)
    Team: Sparking Arrow Gaming (SAG)             (ID: t110kj)
    Team: Xtreme Gaming         (Xtreme)          (ID: t110kk)
  Kind: pro
  Sport: dota
  Gender: coed
  Country: China
  State: 
  Level: B
  Season: 2021Season1 (current: True)
  Author: Poddo
  Note: 
  LotteryNote: 
LeagueEnd

SortBegin
Conf: Seed [(1-8) Call Standard]
Standard: Points, Points HeadToHead, (side) DrawLots
Bubble: Points, (side) DrawLots, Playoff
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:  Upper Division
  Promote:  2
  PromotePlus:  0
  PromotePlusPercent:  0
  WhatDoYouCallDemoted:  demoted
  Demote:  2
  DemotePlus:  0
  DemotePlusPercent:  0
RulesEnd

GamesBegin
TeamListedFirst: home
1/18/21   DLG       1-2   Phoenix   (ID: g111n5w)
1/18/21   SAG       2-0   RNG       (ID: g111n5x)
1/19/21   CDEC      2-1   Xtreme    (ID: g111n5y)
1/22/21   CDEC      2-0   Dragon    (ID: g111n5z)
1/24/21   RNG       2-0   Dragon    (ID: g111n60)
1/25/21   DLG       2-1   Xtreme    (ID: g111n61)
1/25/21   SAG       2-0   Dynasty   (ID: g111n62)
1/26/21   Phoenix   2-1   Dynasty   (ID: g111n63)
1/29/21   RNG       2-0   Dynasty   (ID: g111n64)
1/31/21   Phoenix   2-0   Xtreme    (ID: g111n65)
2/1/21    DLG       1-2   Dragon    (ID: g111n66)
2/1/21    SAG       2-1   CDEC      (ID: g111n67)
2/2/21    Xtreme    2-1   Dynasty   (ID: g111n68)
2/5/21    RNG       2-0   Phoenix   (ID: g111n69)
2/7/21    DLG       0-2   CDEC      (ID: g111n6a)
2/22/21   CDEC            Dynasty   (ID: g111n6b)
2/22/21   SAG             Dragon    (ID: g111n6c)
2/23/21   RNG             Xtreme    (ID: g111n6d)
2/26/21   Phoenix         Dragon    (ID: g111n6e)
2/28/21   DLG             SAG       (ID: g111n6f)
3/1/21    DLG             Dynasty   (ID: g111n6g)
3/1/21    Dragon          Dynasty   (ID: g111n6h)
3/1/21    Dragon          Xtreme    (ID: g111n6i)
3/1/21    Phoenix         CDEC      (ID: g111n6j)
3/1/21    Phoenix         SAG       (ID: g111n6k)
3/1/21    RNG             CDEC      (ID: g111n6m)
3/1/21    RNG             DLG       (ID: g111n6n)
3/1/21    SAG             Xtreme    (ID: g111n6p)
GamesEnd