You can save a task-board as a template and you can save as many templates as you wish to be used across workspaces.
To do this click the “…” icon in the top right of the Workspace window.
Select Board Template > Save Board Template from the dropdown list, and name your Template.
To apply templates, click the “…” icon in the top right of the new Workspace window and select Board Template.
Choose your Template name from the dropdown list and the template will be applied to your current board.