Mediation effect size query

[Khoza]

I have a question about the quality criteria when using Smart-PLS 4 regarding effect size (F-square). I noticed that when I did bootstrapping for my model, PLS quality metrics were produced for direct effects only. My model contains direct as well as mediated relationships. For the mediated paths I accessed the output under specific indirect effects. Under that, there is no F-square output for the mediated relationships. Just checking if it is designed not to produce the mediation effect sizes. Or it has to be calculated separately perhaps using some formula. If anyone could suggest literature for me to establish how to calculate them. So basically what I am saying is that if i hypothesise: system use---->customer satisfaction SmartPLS 4 gives me F-square values for this in the output. But for use------>customer satisfaction--------->customer loyalty I do not get F-square for this from the PLS output. Hopefully, the question makes sense.