I'm not sure if this is the correct forum for this...

I was recently going through a book of photographs that Helene Binet had made of a Jorn Utzon designed house in Mallorca.

Just to clarify, Helene Binet works with 4x5 and medium format film mostly in b/w. And she mostly photographs architecture. Jorn Utzon was the architect of the Sydney opera house amongst many other well known projects.

The author, who accompanied Helene, writes about her developing her negatives in a tent while she was on site.
Here is the exact text:
"The crucial question after lunch is where to find a shaded corner in order to develop the photos taken in the morning."
"Helene works on the floor with her compact tent...."

My question is.... how would one do this?
The logistics seem very challenging.

What will fit inside a Photoflex or harrison tent for processing film? The film could be washed in the sink but one would need a dust free space to let them dry.
And how many negs could one process reasonably in a tent over lunch?

I counted 62 b/w 4x5 photos in the book. (There are also about 20 colour frames which we can ignore because I dont think its possible to process colour in the field.)
Let's say that she made 150 photos.

The books seems to indicate that they were onsite for 5 days.

So 30 per day. 15 in the morning and 15 in the afternoon.

How would this work?