This will almost certainly be an Aid for Trade fund, delivered and managed day to day by consultants.
For example, the Trade Advocacy Fund 2 Plus is managed by AECOM for @DFID_UK and delivers a lot of trade related technical assistance.
aecom.com/projects/trade…
UK government sets aside a pool of money, and establishes a set of objectives for that money.
It then tenders for an external fund manager whose job it is to find or create good projects in line with the fund's objectives and rules.