Add Selectall/Deselectall option in F110
I want to add select all option in f110 t-code.
Here is path :
F110--->PROPOSAL-->*Enter necessary data and enter *--->Double click on vendor.
Now, multiple docs will be displayed .(Screenshot attached)
Here I want to add select all option.
Please give me suggestion.
If enhancement is necessary , at what place it should be done?