I think what you are driving at is “group by”. “group by” is a technique where a DB query sums/counts/aggregates Things. You can read about that here;
http://forum.bubble.io/t/new-feature-grouping-and-aggregating-data/27795
https://manual.bubble.io/core-resources/data/operations-and-comparisons#…-group-by
So one way would be to have a table
branch
employee
and do an “group by” on branch and count the employee. (rows really) and display in a horizontal scrolling repeating group.
This is a typical approach to this type of problem… 