Slightly bonkers that there's a difference in the maximum numbers at Wincham Park depending on whether it's the Albion or the Vics at home.
At the moment, it's decided by whatever league the home team is competing in.
National League North teams deemed to be "elite" which means everything for them is behind closed doors for now.
Northern Premier League = Max 600.
Northern Premier League 1st Divisions, = Max 400.
North West Counties League = Max 300.
All determined by the supposed minimum ground capacity for the league you're playing in. (In the Northern Premier League, it's 30% of the normal league minimum ground capacity of 1950, rounded up to 600).
Away teams entitled to 15% of above figures, e.g. up to 90 tickets for Northern Premier League games at Wincham Park.
Local authorities may further reduce or indeed scrub these figures. For example: Scarborough Athletic and Whitby Town have to play their home games behind closed doors just now.
Supporters of "elite" clubs not to attend fixtures at "non elite" clubs, which is why supporters of Crewe Alex can't come along for the Cheshire Senior Cup tie on Tuesday week (but if they come incognito, not wearing team colours, how will anyone know?!)
As I said upthread, all slightly bonkers, but we are where we are!