There is an article on The Sentinel site about next season, and how it will work (it is based all around Stoke's situation, of course , but some will apply to the EFL as a whole) :-
Supporters hope to be back in grounds in October - but how many?
...a draft document from the Sports Ground Safety Authority (SGSA) claims that stadia could still be as low as 17 per cent of capacity - and as high as 33 per cent full - due to social distancing rules.
The document states: “It is emphasised that capacity assessments arrived at after optimising seat allocations will be permitted only if it can be shown that the entry, exit and emergency exit capacities and, where applicable, the concourse capacity, can support such numbers when social distancing is in place.”
Peter Houghton, director of operations for the Football Safety Officers Association, told The Times: “Concourse capacities are going to be key to the amount of the stadium that can be used. Generally the older the stadiums the less space there is.”
It remains to be seen what will be allowed with away support - and streaming matches before and after October.
Introduction of a maximum squad size
Clubs are also set to vote on whether to follow the Premier League's lead and bring in a maximum squad size.
In the Championship, that would mean 25 registered players, as is the case with the top flight.
Five substitutes expected to be allowed
the EFL - like the Premier League and the FA with the FA Cup - will decide themselves whether to allow it in their own competitions.
The EFL has been expected to consult clubs at the end of the season.
More mid-week games
To fit in the normal number of fixtures in a shorter space of time, there will be more mid-week matches - with 14 in the provisional schedule. That is up from eight last season, not including Bank Holidays.