Thank you for your help

Refer to your answer in topic of can not install

1. Check your permissions of folders, What is folders? i change module folders as 777, it still not be installed "There was error uploading this file to the server" I am not sure which folders, if it folders of mod_btslidesshow zip, how can i change permissions as 777

2 This is not a setup installer. It contains only one file "helper.php".
Please go to your webfolder and overwrite this file with the one in the zip modules/mod_latestnews/helper.php
I am not good enough to do, Can you tell steps by steps for example 1. go to File Zella 2. where is webfolder

3.From picture of attached file, Which module we use ?

Thank you

#1 It's folder : modules/mod_btslideshow/images
#2 You copy this file to folder : modules/mod_latestnews
#3 : The right is module main menu, the left is module joomgallery categories ( mod_joomcat)