Adjust SPD clip spring tension by turning adjustment screw clockwise (tighter),
or counterclockwise (looser).
For how to attach your SPD clips to your shoes see this FAQ> https://echelonfit.zendesk.com/hc/en-us/articles/360060284234-How-to-Attach-Your-SPD-Clips-to-Your-Cycling-Shoes
For how to clip into the pedals with your SPD clips see this YouTube link> https://www.youtube.com/watch?v=yGtfK_xEAMU
Name of video in link above: "How to set up your Echelon EX5s"
Time Stamp 2:26 for where to find the illustration of clipping your shoes into your SPD pedals.