You can do a Hold First Frame or Hold Last Frame with a MediaIn node if you create the MediaIn node from within the Fusion tab. Drag in the clip from the Media Pool while in the Fusion tab.
Win 10 Home | Intel i7 - 10700f 64 GB 1 TB GB SSD 2 TB SSD RTX-3060 12 GB | Resolve Studio 18.6.6| Fusion Studio 18.6.6