Click . You must create a new folder name (e.g., "SuperLeague DB"). Do not overwrite the original "Default" database unless you want to reinstall the game.
There is a thriving community on the and Reddit r/footballmanagergames dedicated to "Historical Database Building." Many of those creators cut their teeth on the FM05 editor. They learned that to fix a player's position from AMC to ST, you don't need a plugin. You just type "20" into the striker slider and pray. fm 2005 editor