I have calculated my employment expenses from working from home. And I used the detailed method. Why are they not showing up on the line 22900 of the return summary?

Same with me!!!! Why isn't Turbo Tax responding to these?  There are many posts about this!

Check to ensure that at the bottom of your T4 where it says did you have employment related expenses you select, Yes. If you had multiple T4, select Yes on all that apply.