@ Zsolt Edelenyi – Please read the beginning of this forum topic to get a general idea about htaccess code/files for multiple websites under a hosting account. A subdomain site is not the same as a subfolder site. This forum site is a subdomain site. The WordPress installation for the forum site is in a folder named: /forum/ in the root hosting account folder and a DNS CNAME record (or A record can be used for subdomain sites) has been created that points to this site: forum.ait-pro.com. The AITpro Blog site is a subfolder site. The WordPress installation folder for the AITpro Blog site is in a folder named: /aitpro-blog/ in the root hosting account folder. The URL is: ait-pro.com/aitpro-blog/.
1. Yes, that is possible, but that is a bad site structure/design to use. Each website should have its own htaccess files in order to better control security specifically for each site individually.
2. See the help information at the beginning of this forum topic.