For further context, Plymouth's piece on return of fans said the following:
"In order to receive approval for fans’ return on a permanent basis, the club is required to undertake a test event, at 50% of our socially-distanced capacity, which currently stands at 3,616 – as a result, Saturday’s temporary capacity will be 1,808.
The socially-distanced capacity of Home Park takes into account a number of key areas, including usable seats, holding capacity, access flow, egress flow, and concourse socially-distanced capacity.
The make-up of supporters’ social bubbles – information that was provided to us earlier this year – determines the number of usable seats, under Tier Two guidelines.
The test event will be assessed by members of the SGSA on Saturday, as well as the local authority. Should the test event be successful, we will be granted approval to raise the capacity to the government-sanctioned figure of 2,000 for fixtures thereafter – therefore it is imperative that supporters abide by the code of conduct and safety measures."
And beyond that
"The team is already in the process of planning for the next stage of fans’ return, including a larger capacity, when restrictions are lifted. Prior to caps being applied to numbers, the club had successfully mapped almost 5,000 supporters to the stadium, based on COVID-secure guidelines. Please rest assured that the 3,616 capacity only stands with match-day operations as they currently exist, and will be altered in due course."