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: Extraliga Ledniho Hokeje - Relegation Round (Extraliga Relegation) (ID: 1a1i4) (Sort: Tag) (Playoffs: 1)
    Team: CEZ Motor Ceske Budejovice                  (CB)                   (ID: t1r3a)
    Team: HC Pirati Chomutov                          (Chomutov)             (ID: t1x40)
    Team: HC Rytiri Kladno                            (Kladno)               (ID: t1x41)
    Team: HC Dynamo Pardubice                         (Pardubice)            (ID: t1r3d)
  Kind: pro
  Sport: hockey
  Gender: male
  Country: Czech Republic
  State: 
  Level: C
  Season: 2018-2019 (current: True)
  Author: Zbyna-CK
  Note: 
  LotteryNote: This is a relegation round for the last 2 teams in the Extraliga League and the two best teams in the WSW League. The top two teams are going to play the Extraliga next year, while the other two are going to play in WSW Liga (B level Czech League).
LeagueEnd

SortBegin
Tag: Points, Greatest Points HeadToHead, Greatest GoalsDelta HeadToHead, 
Greatest GoalsFor HeadToHead, Greatest GoalsDelta, Greatest GoalsFor,
DrawLots
SortEnd

RulesBegin
  PointsForWinInRegulation:  3
  PointsForWinInOvertime:  2
  PointsForWinInShootout:  2
  PointsForLossInRegulation:  0
  PointsForLossInOvertime:  1
  PointsForLossInShootout:  1
  PointsForTie:  0
  PercentOfGamesThatEndInTie:  0
  PercentOfGamesThatEndInOvertimeWin:  0.2
  PercentOfGamesThatEndInShootoutWin:  0.05
  HomeFieldAdvantage:  0.55
  WeightType:  PercentOfPointsWon
  WeightExponent:  0
  WhatDoYouCallATie:  tie
  WhatDoYouCallLottery:  lottery
  WhatDoYouCallPromoted:  Extraliga
  Promote:  0
  PromotePlus:  0
  PromotePlusPercent:  0
  WhatDoYouCallDemoted:  Chance Liga
  Demote:  2
  DemotePlus:  0
  DemotePlusPercent:  0
RulesEnd

GamesBegin
TeamListedFirst: home
3/29/19   5:30 PM   Chomutov    2-0        Kladno      (ID: g1yt9f)
3/29/19   6:00 PM   Pardubice   4-1        CB          (ID: g1yt9g)
3/31/19   5:00 PM   CB          5-4 (ot)   Chomutov    (ID: g1yt9h)
3/31/19   5:00 PM   Kladno      0-5        Pardubice   (ID: g1yt9i)
4/2/19    5:30 PM   Chomutov    1-5        Pardubice   (ID: g1yt9j)
4/2/19    6:00 PM   Kladno      2-0        CB          (ID: g1yt9k)
4/5/19    5:30 PM   CB          3-4        Kladno      (ID: g1yt9m)
4/5/19    6:00 PM   Pardubice   7-0        Chomutov    (ID: g1yt9n)
4/7/19    4:00 PM   Kladno      4-3        Chomutov    (ID: g1yt9p)
4/7/19    5:00 PM   CB          3-4        Pardubice   (ID: g1yt9q)
4/9/19    5:30 PM   Chomutov    1-0        CB          (ID: g1yt9r)
4/9/19    6:00 PM   Pardubice   1-4        Kladno      (ID: g1yt9s)
4/12/19   5:30 PM   Chomutov    1-3        Kladno      (ID: g1yt9t)
4/12/19   6:00 PM   Pardubice   2-0        CB          (ID: g1yt9u)
4/14/19   4:00 PM   CB          1-3        Chomutov    (ID: g1yt9v)
4/14/19   5:00 PM   Kladno      3-5        Pardubice   (ID: g1yt9w)
4/16/19   5:30 PM   Chomutov    5-7        Pardubice   (ID: g1yt9x)
4/16/19   6:00 PM   Kladno      4-2        CB          (ID: g1yt9y)
4/19/19   5:30 PM   CB          2-4        Kladno      (ID: g1yt9z)
4/19/19   6:00 PM   Pardubice   0-3        Chomutov    (ID: g1yta0)
4/21/19   4:00 PM   Kladno      1-2 (ot)   Chomutov    (ID: g1yta1)
4/21/19   5:00 PM   CB          5-2        Pardubice   (ID: g1yta2)
4/23/19   5:30 PM   Chomutov    6-4        CB          (ID: g1yta3)
4/23/19   6:00 PM   Pardubice   4-1        Kladno      (ID: g1yta4)
GamesEnd