Hi Jenna - Welcome to the Atlassian Community!
The board shows the issues identified in the Board Filter. So just change the filter to shows the issues you want to see on this board.
Create the new filter for the board. Be sure to share the filter with those persons who need to see the board.
Click on the 3 dots in the upper right of the board and select Configure Board. On the General tab, go down to the board filter section to change out the filter. You will need to create the filter first so you can change it out.
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