This thread is resolved. Here is a description of the problem and solution.
Problem: I am looking for RTL option if I select Arabic language which is not there I expected to see language support of Arabic must have RTL option Instead, I got no RTL option if I have customization by local developer.
Solution: The WPML is helping with the functionality part but the issue in this case is actually the styling which is not controlled by us. The support for RTL needs to be added by the theme or by the user that added the custom CSS.
The RTL support is not added by WPML because it involves knowing the whole styling structure of the theme. This is why, the theme author is the only one that can help with this kind of change. Having the direction set on the website helps the theme load the style for RTL, when this is available.
This is the technical support forum for WPML - the multilingual WordPress plugin.