diff --git a/scripts/install b/scripts/install
index 5f0524e..9ae7b4f 100644
--- a/scripts/install
+++ b/scripts/install
@@ -34,6 +34,15 @@ app=$YNH_APP_INSTANCE_NAME
 #=================================================
 # CHECK IF THE APP CAN BE INSTALLED WITH THESE ARGS
 #=================================================
+### About --weight and --time
+### ynh_script_progression will show to your final users the progression of each scripts.
+### In order to do that, --weight will represent the relative time of execution compared to the other steps in the script.
+### --time is a packager option, it will show you the execution time since the previous call.
+### This option should be removed before releasing your app.
+### Use the execution time, given by --time, to estimate the weight of a step.
+### A common way to do it is to set a weight equal to the execution time in second +1.
+### The execution time is given for the duration since the previous call. So the weight should be applied to this previous call.
+ynh_script_progression --message="Validating installation parameters..." --weight=1
 
 ynh_script_progression --message="Validating installation parameters..." --weight=1