Each count is done per location.
Multiple counters can be invited to join a count, and participate in a cycle count.
Each person counts items in their section(s), and they save as they go. As each counter completes their section(s) of the count, they save their count to the server/master count list.
When all counters have completed their portion, the count leader reviews and commits the count.
The commit step combines all the counts from each counter (i.e. if 2 or more counters count the same item in different parts of the location, they get added together), and then commits them. This will update the inventory quantity on hand for all items counted in that location.